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

sky/sdk/home.dart

Index: sky/sdk/home.dart
diff --git a/sky/home.dart b/sky/sdk/home.dart
similarity index 76%
rename from sky/home.dart
rename to sky/sdk/home.dart
index a5a282ca035c8b76dd0816b4c6105190e2043f20..8dfb5baf894c6580578cd483a68eeb0a792a1695 100644
--- a/sky/home.dart
+++ b/sky/sdk/home.dart
@@ -51,17 +51,17 @@ class SkyDemo extends Component {
 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'),
     ];