Merge pull request #1410 from abarth/flutter_dev

s/sky-dev/flutter-dev/

packages/flutter/pubspec.yaml

 name: sky
 version: 0.0.51
-author: Chromium Authors <sky-dev@googlegroups.com>
+author: Flutter Authors <flutter-dev@googlegroups.com>
 description: A framework for writing Flutter applications
 homepage: http://flutter.io
 dependencies:

packages/flutter_sprites/pubspec.yaml

 name: skysprites
 description: A sprite toolkit built on top of Flutter
 version: 0.0.1
-author: Chromium Authors <sky-dev@googlegroups.com>
+author: Flutter Authors <flutter-dev@googlegroups.com>
 homepage: http://flutter.io
 dependencies:
   sky: ">=0.0.36 < 0.1.0"

packages/updater/pubspec.yaml

 name: sky_updater
 version: 0.0.1
-author: Chromium Authors <sky-dev@googlegroups.com>
+author: Flutter Authors <flutter-dev@googlegroups.com>
 description: The autoupdater for flutter
 homepage: http://flutter.io
 dependencies: