Use Material design rules for capitalisation

See https://www.google.com/design/spec/style/writing.html#

examples/material_gallery/lib/demo/buttons_demo.dart

@@ -201,7 +201,7 @@ class _ButtonsDemoState extends State<ButtonsDemo> {
       values: _demos,
       child: new Scaffold(
         appBar: new AppBar(
-          title: new Text("Buttons"),
+          title: new Text('Buttons'),
           tabBar: new TabBar<_ButtonDemo>(
             isScrollable: true,
             labels: new Map<_ButtonDemo, TabLabel>.fromIterable(_demos, value: (_ButtonDemo demo) => demo.tabLabel)

examples/material_gallery/lib/demo/cards_demo.dart

@@ -120,7 +120,7 @@ class CardsDemo extends StatelessWidget {
   Widget build(BuildContext context) {
     return new Scaffold(
       appBar: new AppBar(
-        title: new Text("Travel Stream")
+        title: new Text('Travel stream')
       ),
       body: new Block(
         padding: const EdgeInsets.only(top: 8.0, left: 8.0, right: 8.0),

examples/material_gallery/lib/demo/chip_demo.dart

@@ -38,7 +38,7 @@ class _ChipDemoState extends State<ChipDemo> {
     }
 
     return new Scaffold(
-      appBar: new AppBar(title: new Text("Chips")),
+      appBar: new AppBar(title: new Text('Chips')),
       body: new Block(
         children: chips.map((Widget widget) {
           return new Container(

examples/material_gallery/lib/demo/colors_demo.dart

@@ -116,7 +116,7 @@ class ColorsDemo extends StatelessWidget {
       child: new Scaffold(
         appBar: new AppBar(
           elevation: 0,
-          title: new Text("Colors"),
+          title: new Text('Colors'),
           tabBar: new TabBar<ColorSwatch>(
             isScrollable: true,
             labels: new Map<ColorSwatch, TabLabel>.fromIterable(colorSwatches, value: (ColorSwatch swatch) {

examples/material_gallery/lib/demo/date_picker_demo.dart

@@ -33,7 +33,7 @@ class _DatePickerDemoState extends State<DatePickerDemo> {
   Widget build(BuildContext context) {
     return
       new Scaffold(
-      appBar: new AppBar(title: new Text("Date Picker")),
+      appBar: new AppBar(title: new Text('Date picker')),
       body: new Column(
         children: <Widget>[
           new Text(new DateFormat.yMMMd().format(_selectedDate)),

examples/material_gallery/lib/demo/dialog_demo.dart

@@ -119,7 +119,7 @@ class DialogDemoState extends State<DialogDemo> {
               showDemoDialog/*<DialogDemoAction>*/(
                 context: context,
                 dialog: new Dialog(
-                  title: new Text("Use Google's location service?"),
+                  title: new Text('Use Google\'s location service?'),
                   content: new Text(
                     _alertWithTitleText,
                     style: dialogTextStyle

examples/material_gallery/lib/demo/drawing_demo.dart

@@ -48,7 +48,7 @@ class _DrawingDemoState extends State<DrawingDemo> {
 
     return new Scaffold(
       appBar: new AppBar(
-        title: new Text("Fancy Lines")
+        title: new Text('Fancy lines')
       ),
       body: body
     );

examples/material_gallery/lib/demo/drop_down_demo.dart

@@ -22,7 +22,7 @@ class _DropDownDemoState extends State<DropDownDemo> {
   @override
   Widget build(BuildContext context) {
     return new Scaffold(
-      appBar: new AppBar(title: new Text("Dropdown Button")),
+      appBar: new AppBar(title: new Text('Drop-down button')),
       body: new Center(
         child: new DropDownButton<String>(
           items: buildItems(),

examples/material_gallery/lib/demo/fitness_demo.dart

@@ -20,7 +20,7 @@ class FitnessDemo extends StatelessWidget {
   Widget build(BuildContext context) {
     return new Scaffold(
       appBar: new AppBar(
-        title: new Text("Fitness")
+        title: new Text('Fitness')
       ),
       body: new _FitnessDemoContents()
     );
@@ -108,7 +108,7 @@ class _FitnessDemoContentsState extends State<_FitnessDemoContents> {
           ),
           new Padding(
             padding: new EdgeInsets.only(top: 20.0),
-            child: new Text("JUMPING JACKS", style: Theme.of(context).textTheme.title)
+            child: new Text('JUMPING JACKS', style: Theme.of(context).textTheme.title)
           ),
           new Padding(
             padding: new EdgeInsets.only(top: 20.0, bottom: 20.0),
@@ -186,11 +186,11 @@ class _FitnessDemoContentsState extends State<_FitnessDemoContents> {
           child: new Stack(children: <Widget>[
             new _Fireworks(),
             new Dialog(
-              title: new Text("Awesome workout"),
-              content: new Text("You have completed $_count jumping jacks. Good going!"),
+              title: new Text('Awesome workout'),
+              content: new Text('You have completed $_count jumping jacks. Good going!'),
               actions: <Widget>[
                 new FlatButton(
-                  child: new Text("SWEET"),
+                  child: new Text('SWEET'),
                   onPressed: () { Navigator.pop(context); }
                 )
               ]

examples/material_gallery/lib/demo/flexible_space_demo.dart

@@ -113,11 +113,11 @@ class FlexibleSpaceDemoState extends State<FlexibleSpaceDemo> {
               itemBuilder: (BuildContext context) => <PopupMenuItem<AppBarBehavior>>[
                 new PopupMenuItem<AppBarBehavior>(
                   value: AppBarBehavior.scroll,
-                  child: new Text('AppBar scrolls away')
+                  child: new Text('Toolbar scrolls away')
                 ),
                 new PopupMenuItem<AppBarBehavior>(
                   value: AppBarBehavior.under,
-                  child: new Text('AppBar stays put')
+                  child: new Text('Toolbar stays put')
                 )
               ]
             )

examples/material_gallery/lib/demo/full_screen_dialog_demo.dart

@@ -149,7 +149,7 @@ class FullScreenDialogDemoState extends State<FullScreenDialogDemo> {
           icon: Icons.clear,
           onPressed: () { handleDismissButton(context); }
         ),
-        title: new Text('New Event'),
+        title: new Text('New event'),
         actions: <Widget> [
           new FlatButton(
             child: new Text('SAVE', style: theme.textTheme.body1.copyWith(color: Colors.white)),

examples/material_gallery/lib/demo/grid_list_demo.dart

@@ -180,7 +180,7 @@ class GridListDemoState extends State<GridListDemo> {
     final Orientation orientation = MediaQuery.of(context).orientation;
     return new Scaffold(
       appBar: new AppBar(
-        title: new Text('Grid List'),
+        title: new Text('Grid list'),
         actions: <Widget>[
           new IconButton(
             icon: Icons.more_vert,

examples/material_gallery/lib/demo/leave_behind_demo.dart

@@ -130,7 +130,7 @@ class LeaveBehindDemoState extends State<LeaveBehindDemo> {
     return new Scaffold(
       key: _scaffoldKey,
       appBar: new AppBar(
-        title: new Text('Swipe Items to Dismiss'),
+        title: new Text('Swipe items to dismiss'),
         actions: <Widget>[
           new PopupMenuButton<LeaveBehindDemoAction>(
             onSelected: handleDemoAction,

examples/material_gallery/lib/demo/list_demo.dart

@@ -77,7 +77,7 @@ class ListDemoState extends State<ListDemo> {
             ),
             new ListItem(
               dense: true,
-              title: new Text('Show Avatar'),
+              title: new Text('Show avatar'),
               trailing: new Checkbox(
                 value: _showAvatars,
                 onChanged: (bool value) {
@@ -90,7 +90,7 @@ class ListDemoState extends State<ListDemo> {
             ),
             new ListItem(
               dense: true,
-              title: new Text('Show Icon'),
+              title: new Text('Show icon'),
               trailing: new Checkbox(
                 value: _showIcons,
                 onChanged: (bool value) {
@@ -103,7 +103,7 @@ class ListDemoState extends State<ListDemo> {
             ),
             new ListItem(
               dense: true,
-              title: new Text('Show Dividers'),
+              title: new Text('Show dividers'),
               trailing: new Checkbox(
                 value: _showDividers,
                 onChanged: (bool value) {
@@ -116,7 +116,7 @@ class ListDemoState extends State<ListDemo> {
             ),
             new ListItem(
               dense: true,
-              title: new Text('Dense Layout'),
+              title: new Text('Dense layout'),
               trailing: new Checkbox(
                 value: _dense,
                 onChanged: (bool value) {
@@ -148,7 +148,7 @@ class ListDemoState extends State<ListDemo> {
       isThreeLine: _itemSize == ListDemoItemSize.threeLine,
       dense: _dense,
       leading: _showAvatars ? new CircleAvatar(child: new Text(item)) : null,
-      title: new Text('This item represents $item'),
+      title: new Text('This item represents $item.'),
       subtitle: secondary,
       trailing: _showIcons ? new Icon(icon: Icons.info, color: Theme.of(context).disabledColor) : null
     );
@@ -177,7 +177,7 @@ class ListDemoState extends State<ListDemo> {
     return new Scaffold(
       key: scaffoldKey,
       appBar: new AppBar(
-        title: new Text('Scrolling List\n$itemSizeText$layoutText'),
+        title: new Text('Scrolling list\n$itemSizeText$layoutText'),
         actions: <Widget>[
           new IconButton(
             icon: Icons.sort_by_alpha,

examples/material_gallery/lib/demo/menu_demo.dart

@@ -66,12 +66,12 @@ class MenuDemoState extends State<MenuDemo> {
             onSelected: showMenuSelection,
             itemBuilder: (BuildContext context) => <PopupMenuItem<String>>[
               new PopupMenuItem<String>(
-                value: 'AppBar Menu',
-                child: new Text('AppBar Menu')
+                value: 'Toolbar menu',
+                child: new Text('Toolbar menu')
               ),
               new PopupMenuItem<String>(
-                value: 'Right Here',
-                child: new Text('Right Here')
+                value: 'Right here',
+                child: new Text('Right here')
               ),
               new PopupMenuItem<String>(
                 value: 'Hooray!',
@@ -133,7 +133,7 @@ class MenuDemoState extends State<MenuDemo> {
                   value: 'Get Link',
                   child: new ListItem(
                     leading: new Icon(icon: Icons.link),
-                    title: new Text('Get Link')
+                    title: new Text('Get link')
                   )
                 ),
                 new PopupMenuDivider(),

examples/material_gallery/lib/demo/modal_bottom_sheet_demo.dart

@@ -14,7 +14,7 @@ class ModalBottomSheetDemo extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return new Scaffold(
-      appBar: new AppBar(title: new Text("Modal Bottom Sheet")),
+      appBar: new AppBar(title: new Text('Modal bottom sheet')),
       body: new Center(
         child: new RaisedButton(
           child: new Text('SHOW BOTTOM SHEET'),
@@ -23,7 +23,7 @@ class ModalBottomSheetDemo extends StatelessWidget {
               return new Container(
                 child: new Padding(
                   padding: const EdgeInsets.all(32.0),
-                  child: new Text("This is the modal bottom sheet. Click anywhere to dismiss.", style: textStyle)
+                  child: new Text('This is the modal bottom sheet. Click anywhere to dismiss.', style: textStyle)
                 )
               );
             });

examples/material_gallery/lib/demo/page_selector_demo.dart

@@ -24,7 +24,7 @@ class PageSelectorDemo extends StatelessWidget {
     ];
 
     return new Scaffold(
-      appBar: new AppBar(title: new Text('Page Selector')),
+      appBar: new AppBar(title: new Text('Page selector')),
       body: new TabBarSelection<IconData>(
         values: icons,
         child: new Builder(

examples/material_gallery/lib/demo/persistent_bottom_sheet_demo.dart

@@ -38,7 +38,7 @@ class _PersistentBottomSheetDemoState extends State<PersistentBottomSheetDemo> {
         ),
         child: new Padding(
           padding: const EdgeInsets.all(32.0),
-          child: new Text("This is a Material persistent bottom sheet. Drag downwards to dismiss it.", style: textStyle)
+          child: new Text('This is a Material persistent bottom sheet. Drag downwards to dismiss it.', style: textStyle)
         )
       );
     })
@@ -53,7 +53,7 @@ class _PersistentBottomSheetDemoState extends State<PersistentBottomSheetDemo> {
   Widget build(BuildContext context) {
     return new Scaffold(
       key: _scaffoldKey,
-      appBar: new AppBar(title: new Text("Persistent Bottom Sheet")),
+      appBar: new AppBar(title: new Text('Persistent bottom sheet')),
       floatingActionButton: new FloatingActionButton(
         child: new Icon(icon: Icons.add),
         backgroundColor: Colors.redAccent[200]

examples/material_gallery/lib/demo/progress_indicator_demo.dart

@@ -73,7 +73,7 @@ class _ProgressIndicatorDemoState extends State<ProgressIndicatorDemo> {
           height: 30.0,
           child: new CircularProgressIndicator(value: animation.value)
         ),
-        new Text("${(animation.value * 100.0).toStringAsFixed(1)}%" + (controller.isAnimating ? '' : ' (paused)'))
+        new Text('${(animation.value * 100.0).toStringAsFixed(1)}%${ controller.isAnimating ? "" : " (paused)" }')
     ];
     return new Column(
       children: indicators
@@ -86,7 +86,7 @@ class _ProgressIndicatorDemoState extends State<ProgressIndicatorDemo> {
   @override
   Widget build(BuildContext context) {
     return new Scaffold(
-      appBar: new AppBar(title: new Text('Progress Indicators')),
+      appBar: new AppBar(title: new Text('Progress indicators')),
       body: new DefaultTextStyle(
         style: Theme.of(context).textTheme.title,
         child: new GestureDetector(

examples/material_gallery/lib/demo/scrollable_tabs_demo.dart

@@ -49,22 +49,22 @@ class ScrollableTabsDemoState extends State<ScrollableTabsDemo> {
       values: icons,
       child: new Scaffold(
         appBar: new AppBar(
-          title: new Text('Scrollable Tabs'),
+          title: new Text('Scrollable tabs'),
           actions: <Widget>[
             new PopupMenuButton<TabsDemoStyle>(
               onSelected: changeDemoStyle,
               itemBuilder: (BuildContext context) => <PopupMenuItem<TabsDemoStyle>>[
                 new PopupMenuItem<TabsDemoStyle>(
                   value: TabsDemoStyle.iconsAndText,
-                  child: new Text('Icons and Text')
+                  child: new Text('Icons and text')
                 ),
                 new PopupMenuItem<TabsDemoStyle>(
                   value: TabsDemoStyle.iconsOnly,
-                  child: new Text('Icons Only')
+                  child: new Text('Icons only')
                 ),
                 new PopupMenuItem<TabsDemoStyle>(
                   value: TabsDemoStyle.textOnly,
-                  child: new Text('Text Only')
+                  child: new Text('Text only')
                 ),
               ]
             )

examples/material_gallery/lib/demo/scrolling_techniques_demo.dart

@@ -116,7 +116,7 @@ class ScrollingTechniquesDemo extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return new Scaffold(
-      appBar: new AppBar(title: new Text('Scrolling Techniques')),
+      appBar: new AppBar(title: new Text('Scrolling techniques')),
       body: new Padding(
         padding: const EdgeInsets.symmetric(horizontal: 16.0),
         child: new Block(

examples/material_gallery/lib/demo/selection_controls_demo.dart

@@ -35,7 +35,7 @@ class _SelectionControlsDemoState extends State<SelectionControlsDemo> {
   @override
   Widget build(BuildContext context) {
     return new Scaffold(
-      appBar: new AppBar(title: new Text("Selection Controls")),
+      appBar: new AppBar(title: new Text('Selection controls')),
       body: new Column(
         children: <Widget>[
           new Row(

examples/material_gallery/lib/demo/snack_bar_demo.dart

@@ -40,12 +40,12 @@ class _SnackBarDemoState extends State<SnackBarDemo> {
               onPressed: () {
                 final int thisSnackBarIndex = _snackBarIndex++;
                 Scaffold.of(context).showSnackBar(new SnackBar(
-                  content: new Text('This is SnackBar #$thisSnackBarIndex'),
+                  content: new Text('This is snackbar #$thisSnackBarIndex.'),
                   action: new SnackBarAction(
                     label: 'ACTION',
                     onPressed: () {
                       Scaffold.of(context).showSnackBar(new SnackBar(
-                        content: new Text("You pressed SnackBar $thisSnackBarIndex's Action")
+                        content: new Text('You pressed snackbar $thisSnackBarIndex\'s action.')
                       ));
                     }
                   )
@@ -70,7 +70,7 @@ class _SnackBarDemoState extends State<SnackBarDemo> {
   Widget build(BuildContext context) {
     return new Scaffold(
       appBar: new AppBar(
-        title: new Text('SnackBar')
+        title: new Text('Snackbar')
       ),
       body: new Builder(
         // Create an inner BuildContext so that the snackBar onPressed methods

examples/material_gallery/lib/demo/tabs_demo.dart

@@ -48,7 +48,7 @@ class TabsDemoState extends State<TabsDemo> {
         scrollableKey: _selectedPage.key,
         appBarBehavior: AppBarBehavior.under,
         appBar: new AppBar(
-          title: new Text('Tabs and Scrolling'),
+          title: new Text('Tabs and scrolling'),
           tabBar: new TabBar<_Page>(
             labels: new Map<_Page, TabLabel>.fromIterable(_pages, value: (_Page page) {
               return new TabLabel(text: page.label);

examples/material_gallery/lib/demo/tabs_fab_demo.dart

@@ -97,7 +97,7 @@ class _TabsFabDemoState extends State<TabsFabDemo> {
       child: new Scaffold(
         key: scaffoldKey,
         appBar: new AppBar(
-          title: new Text("FAB per Tab"),
+          title: new Text('FAB per tab'),
           tabBar: new TabBar<_Page>(
             labels: new Map<_Page, TabLabel>.fromIterable(pages, value: (_Page page) => page.tabLabel)
           )

examples/material_gallery/lib/demo/text_field_demo.dart

@@ -61,7 +61,7 @@ class TextFieldDemoState extends State<TextFieldDemo> {
     return new Scaffold(
       key: _scaffoldKey,
       appBar: new AppBar(
-        title: new Text('Text Fields')
+        title: new Text('Text fields')
       ),
       body: new Form(
         onSubmitted: _handleSubmitted,

examples/material_gallery/lib/demo/time_picker_demo.dart

@@ -29,7 +29,7 @@ class _TimePickerDemoState extends State<TimePickerDemo> {
   @override
   Widget build(BuildContext context) {
     return new Scaffold(
-      appBar: new AppBar(title: new Text("Time Picker")),
+      appBar: new AppBar(title: new Text('Time picker')),
       body: new Column(
         children: <Widget>[
           new Text('$_selectedTime'),

examples/material_gallery/lib/demo/tooltip_demo.dart

@@ -34,7 +34,7 @@ class TooltipDemo extends StatelessWidget {
                       color: theme.primaryColor
                     )
                   ),
-                  new Text(' icon', style: theme.textTheme.subhead)
+                  new Text(' icon.', style: theme.textTheme.subhead)
                 ]
               ),
               new Center(
@@ -45,7 +45,7 @@ class TooltipDemo extends StatelessWidget {
                   tooltip: 'place a phone call',
                   onPressed: () {
                     Scaffold.of(context).showSnackBar(new SnackBar(
-                       content: new Text('That was an ordinary tap')
+                       content: new Text('That was an ordinary tap.')
                     ));
                   }
                 )

examples/material_gallery/lib/demo/two_level_list_demo.dart

@@ -8,7 +8,7 @@ class TwoLevelListDemo extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return new Scaffold(
-      appBar: new AppBar(title: new Text('Expand/Collapse List Control')),
+      appBar: new AppBar(title: new Text('Expand/collapse list control')),
       body: new TwoLevelList(
         type: MaterialListType.oneLine,
         items: <Widget>[

examples/material_gallery/lib/demo/weather_demo.dart

@@ -65,7 +65,7 @@ class _WeatherDemoState extends State<WeatherDemo> {
     if (!assetsLoaded) {
       return new Scaffold(
         appBar: new AppBar(
-          title: new Text("Weather")
+          title: new Text('Weather')
         ),
         body: new Container(
           decoration: new BoxDecoration(
@@ -77,7 +77,7 @@ class _WeatherDemoState extends State<WeatherDemo> {
 
     return new Scaffold(
       appBar: new AppBar(
-        title: new Text("Weather")
+        title: new Text('Weather')
       ),
       body: new Material(
         child: new Stack(

examples/material_gallery/lib/gallery/home.dart

@@ -85,7 +85,7 @@ class GalleryHomeState extends State<GalleryHome> {
         expandedHeight: _kFlexibleSpaceMaxHeight,
         flexibleSpace: (BuildContext context) =>  new FlexibleSpaceBar(
           image: new GalleryHeader(),
-          title: new Text("Flutter Gallery")
+          title: new Text("Flutter gallery")
         )
       ),
       scrollableKey: _listKey,
@@ -101,38 +101,38 @@ class GalleryHomeState extends State<GalleryHome> {
             children: <Widget>[
               new GalleryItem(title: "Weather", builder: () => new WeatherDemo()),
               new GalleryItem(title: "Fitness", builder: () => new FitnessDemo()),
-              new GalleryItem(title: "Fancy Lines", builder: () => new DrawingDemo()),
+              new GalleryItem(title: "Fancy lines", builder: () => new DrawingDemo()),
             ]
           ),
           new TwoLevelSublist(
             leading: new Icon(icon: Icons.extension),
             title: new Text("Components"),
             children: <Widget>[
-              new GalleryItem(title: 'App Bar', builder: () => new FlexibleSpaceDemo()),
               new GalleryItem(title: 'Buttons', builder: () => new ButtonsDemo()),
-              new GalleryItem(title: 'Buttons: Floating Action Button', builder: () => new TabsFabDemo()),
+              new GalleryItem(title: 'Buttons: floating action button', builder: () => new TabsFabDemo()),
               new GalleryItem(title: 'Cards', builder: () => new CardsDemo()),
               new GalleryItem(title: 'Chips', builder: () => new ChipDemo()),
-              new GalleryItem(title: 'Date Picker', builder: () => new DatePickerDemo()),
+              new GalleryItem(title: 'Date picker', builder: () => new DatePickerDemo()),
               new GalleryItem(title: 'Dialog', builder: () => new DialogDemo()),
-              new GalleryItem(title: 'Dropdown Button', builder: () => new DropDownDemo()),
-              new GalleryItem(title: 'Expand/Collapse List Control', builder: () => new TwoLevelListDemo()),
+              new GalleryItem(title: 'Drop-down button', builder: () => new DropDownDemo()),
+              new GalleryItem(title: 'Expand/collapse list control', builder: () => new TwoLevelListDemo()),
               new GalleryItem(title: 'Grid', builder: () => new GridListDemo()),
               new GalleryItem(title: 'Icons', builder: () => new IconsDemo()),
-              new GalleryItem(title: 'Leave-behind List Items', builder: () => new LeaveBehindDemo()),
+              new GalleryItem(title: 'Leave-behind list items', builder: () => new LeaveBehindDemo()),
               new GalleryItem(title: 'List', builder: () => new ListDemo()),
-              new GalleryItem(title: 'Modal Bottom Sheet', builder: () => new ModalBottomSheetDemo()),
               new GalleryItem(title: 'Menus', builder: () => new MenuDemo()),
-              new GalleryItem(title: 'Page Selector', builder: () => new PageSelectorDemo()),
-              new GalleryItem(title: 'Persistent Bottom Sheet', builder: () => new PersistentBottomSheetDemo()),
-              new GalleryItem(title: 'Progress Indicators', builder: () => new ProgressIndicatorDemo()),
-              new GalleryItem(title: 'Scrollable Tabs', builder: () => new ScrollableTabsDemo()),
-              new GalleryItem(title: 'Selection Controls', builder: () => new SelectionControlsDemo()),
+              new GalleryItem(title: 'Modal bottom sheet', builder: () => new ModalBottomSheetDemo()),
+              new GalleryItem(title: 'Page selector', builder: () => new PageSelectorDemo()),
+              new GalleryItem(title: 'Persistent bottom sheet', builder: () => new PersistentBottomSheetDemo()),
+              new GalleryItem(title: 'Progress indicators', builder: () => new ProgressIndicatorDemo()),
+              new GalleryItem(title: 'Scrollable tabs', builder: () => new ScrollableTabsDemo()),
+              new GalleryItem(title: 'Selection controls', builder: () => new SelectionControlsDemo()),
               new GalleryItem(title: 'Sliders', builder: () => new SliderDemo()),
-              new GalleryItem(title: 'SnackBar', builder: () => new SnackBarDemo()),
+              new GalleryItem(title: 'Snackbar', builder: () => new SnackBarDemo()),
               new GalleryItem(title: 'Tabs', builder: () => new TabsDemo()),
-              new GalleryItem(title: 'Text Fields', builder: () => new TextFieldDemo()),
-              new GalleryItem(title: 'Time Picker', builder: () => new TimePickerDemo()),
+              new GalleryItem(title: 'Text fields', builder: () => new TextFieldDemo()),
+              new GalleryItem(title: 'Time picker', builder: () => new TimePickerDemo()),
+              new GalleryItem(title: 'Toolbar', builder: () => new FlexibleSpaceDemo()),
               new GalleryItem(title: 'Tooltips', builder: () => new TooltipDemo()),
             ]
           ),