Add Fitness.apk with icon

This is just one of many steps in preparation for turning
fitness into a play-store ready app.

@abarth @collinjackson

packages/flutter/example/BUILD.gn

@@ -7,6 +7,7 @@ group("example") {
 
   deps = [
     "//sky/packages/sky/example/demo_launcher",
+    "//sky/packages/sky/example/fitness",
     "//sky/packages/sky/example/game",
     "//sky/packages/sky/example/mine_digger",
     "//sky/packages/sky/example/rendering",

packages/flutter/example/demo_launcher/apk/README.md

@@ -4,3 +4,5 @@ and is public domain.
 
 Icon resources were generated using:
 http://romannurik.github.io/AndroidAssetStudio/icons-launcher.html
+which produces art under CC 3.0:
+http://creativecommons.org/licenses/by/3.0/

packages/flutter/example/fitness/BUILD.gn

@@ -2,12 +2,17 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-assert(is_android)
-
 import("//sky/build/sky_app.gni")
 
 sky_app("fitness") {
-  apk_name = "Fitness"
   main_dart = "lib/main.dart"
   manifest = "sky.yaml"
+
+  if (is_android) {
+    apk_name = "Fitness"
+
+    deps = [
+      "//sky/packages/sky/example/fitness/apk:resources",
+    ]
+  }
 }

packages/flutter/example/fitness/apk/AndroidManifest.xml

@@ -4,12 +4,12 @@
      found in the LICENSE file.
  -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="org.domokit.fitness">
+    package="org.domokit.fitness" android:versionCode="1" android:versionName="0.0.1">
 
     <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="21" />
     <uses-permission android:name="android.permission.INTERNET"/>
 
-    <application android:name="org.domokit.sky.shell.SkyApplication" android:label="Fitness">
+    <application  android:icon="@mipmap/ic_launcher" android:name="org.domokit.sky.shell.SkyApplication" android:label="Fitness">
         <activity android:name="org.domokit.sky.shell.SkyActivity"
                   android:launchMode="singleTask"
                   android:theme="@android:style/Theme.Black.NoTitleBar"

packages/flutter/example/fitness/apk/BUILD.gn

+# Copyright 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+assert(is_android)
+
+import("//build/config/android/config.gni")
+import("//build/config/android/rules.gni")
+
+
+android_resources("resources") {
+  resource_dirs = [ "res" ]
+  android_manifest = "AndroidManifest.xml"
+}

packages/flutter/example/fitness/apk/README.md

+Icon image comes from:
+https://openclipart.org/detail/22309/apple-icon
+and is public domain.
+
+Icon resources were generated using:
+http://romannurik.github.io/AndroidAssetStudio/icons-launcher.html
+with settings:
+http://romannurik.github.io/AndroidAssetStudio/icons-launcher.html#foreground.type=image&foreground.space.trim=1&foreground.space.pad=0&foreColor=607d8b%2C0&crop=0&backgroundShape=none&backColor=ffffff%2C100&effects=none
+which produces art under CC 3.0:
+http://creativecommons.org/licenses/by/3.0/

packages/flutter/example/stocks/apk/AndroidManifest.xml

@@ -4,7 +4,7 @@
      found in the LICENSE file.
  -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="org.domokit.stocks">
+    package="org.domokit.stocks" android:versionCode="1" android:versionName="0.0.1">
 
     <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="21" />
     <uses-permission android:name="android.permission.INTERNET"/>