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

sky/examples/widgets/navigation.dart

Index: sky/examples/widgets/navigation.dart
diff --git a/sky/examples/widgets/navigation.dart b/sky/examples/widgets/navigation.dart
deleted file mode 100644
index 82a9b35bbc7c0ccbe1eb536e8bb017aac1588011..0000000000000000000000000000000000000000
--- a/sky/examples/widgets/navigation.dart
+++ /dev/null
@@ -1,72 +0,0 @@
-// 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 'package:sky/widgets/basic.dart';
-import 'package:sky/widgets/navigator.dart';
-import 'package:sky/widgets/raised_button.dart';
-
-List<Route> routes = [
-  new Route(
-    name: 'home',
-    builder: (navigator, route) => new Container(
-      padding: const EdgeDims.all(20.0),
-      decoration: new BoxDecoration(backgroundColor: const Color(0xFFCCCCCC)),
-      child: new Block([
-        new Text("You are at home"),
-        new RaisedButton(
-          child: new Text('GO SHOPPING'),
-          onPressed: () => navigator.pushNamed('shopping')
-        ),
-        new RaisedButton(
-          child: new Text('START ADVENTURE'),
-          onPressed: () => navigator.pushNamed('adventure')
-        )
-      ])
-    )
-  ),
-  new Route(
-    name: 'shopping',
-    builder: (navigator, route) => new Container(
-      padding: const EdgeDims.all(20.0),
-      decoration: new BoxDecoration(backgroundColor: const Color(0xFFBF5FFF)),
-      child: new Block([
-        new Text("Village Shop"),
-        new RaisedButton(
-          child: new Text('RETURN HOME'),
-          onPressed: () => navigator.pop()
-        ),
-        new RaisedButton(
-          child: new Text('GO TO DUNGEON'),
-          onPressed: () => navigator.push(routes[2])
-        )
-      ])
-    )
-  ),
-  new Route(
-    name: 'adventure',
-    builder: (navigator, route) => new Container(
-      padding: const EdgeDims.all(20.0),
-      decoration: new BoxDecoration(backgroundColor: const Color(0xFFDC143C)),
-      child: new Block([
-        new Text("Monster's Lair"),
-        new RaisedButton(
-          child: new Text('NO WAIT! GO BACK!'),
-          onPressed: () => navigator.pop()
-        )
-      ])
-    )
-  )
-];
-
-class NavigationExampleApp extends App {
-  NavigationState _navState = new NavigationState(routes);
-
-  Widget build() {
-    return new Flex([new Navigator(_navState)]);
-  }
-}
-
-void main() {
-  runApp(new NavigationExampleApp());
-}