Move sky/examples to sky/sdk/lib/example, and code changes to support that change. Fixes T277.

sky/sdk/home.dart

 // 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.
 
 import 'dart:sky';
 
 import 'package:mojom/intents/intents.mojom.dart';
 import 'package:sky/framework/shell.dart' as shell;
 import 'package:sky/theme/colors.dart' as colors;
 import 'package:sky/theme/edges.dart';
@@ skipping 33 matching lines @@
         child: new Text(text),
         onPressed: _handlePress
       )
     );
   }
 }
 
 class SkyHome extends App {
   Widget build() {
     List<Widget> children = [
-      new SkyDemo('Stocks App', 'examples/stocks2/lib/stock_app.dart'),
-      new SkyDemo('Asteroids Game', 'examples/game/main.dart'),
-      new SkyDemo('Interactive Flex', 'examples/rendering/interactive_flex.dart'),
-      new SkyDemo('Sector Layout', 'examples/widgets/sector.dart'),
-      new SkyDemo('Touch Demo', 'examples/rendering/touch_demo.dart'),
-      new SkyDemo('Minedigger Game', 'examples/mine_digger/mine_digger.dart'),
+      new SkyDemo('Stocks App', 'lib/example/stocks2/lib/stock_app.dart'),
+      new SkyDemo('Asteroids Game', 'lib/example/game/main.dart'),
+      new SkyDemo('Interactive Flex', 'lib/example/rendering/interactive_flex.dart'),
+      new SkyDemo('Sector Layout', 'lib/example/widgets/sector.dart'),
+      new SkyDemo('Touch Demo', 'lib/example/rendering/touch_demo.dart'),
+      new SkyDemo('Minedigger Game', 'lib/example/mine_digger/mine_digger.dart'),
 
       // TODO(eseidel): We could use to separate these groups?
-      new SkyDemo('Old Stocks App', 'examples/stocks/main.sky'),
-      new SkyDemo('Old Touch Demo', 'examples/raw/touch-demo.sky'),
-      new SkyDemo('Old Spinning Square', 'examples/raw/spinning-square.sky'),
+      new SkyDemo('Old Stocks App', 'lib/example/stocks/main.sky'),
+      new SkyDemo('Old Touch Demo', 'lib/example/raw/touch-demo.sky'),
+      new SkyDemo('Old Spinning Square', 'lib/example/raw/spinning-square.sky'),
 
       new SkyDemo('Licences (Old)', 'LICENSES.sky'),
     ];
 
     return new Scaffold(
       toolbar: new ToolBar(
           center: new Text('Sky Demos', style: typography.white.title),
           backgroundColor: colors.Blue[500]),
       body: new Material(
         edge: MaterialEdge.canvas,
         child: new Flex(
           children,
           direction: FlexDirection.vertical,
           justifyContent: FlexJustifyContent.spaceAround
         )
       )
     );
   }
 }
 
 void main() {
   runApp(new SkyHome());
 }