Remove home.sky, update home.dart

TBR=ianh@google.com

Review URL: https://codereview.chromium.org/1204483002.

examples/home.sky

-#!mojo mojo:sky_viewer
-<style>
- div { display: paragraph; }
- .h1 { font-size: 2em; margin: 1em; }
- .p { margin: 0.5em 1em; color: #bcd8f5; font-weight: 900; }
-</style>
-<div class="h1">about:blank</div>
-<div class="p">Welcome to Sky!</div>

home.dart

@@ -48,16 +48,16 @@ class SkyDemo extends Component {
 class SkyHome extends App {
   UINode build() {
     List<UINode> children = [
-      new SkyDemo('Stocks2 App', 'examples/stocks2/lib/stock_app.dart'),
-      new SkyDemo('Box2D Game', 'examples/game/main.dart'),
+      new SkyDemo('Stocks App', 'examples/stocks2/lib/stock_app.dart'),
+      new SkyDemo('Astroids Game', 'examples/game/main.dart'),
       new SkyDemo('Interactive Flex', 'examples/rendering/interactive_flex.dart'),
       new SkyDemo('Sector Layout', 'examples/rendering/sector_layout.dart'),
       new SkyDemo('Touch Demo', 'examples/rendering/touch_demo.dart'),
 
       // TODO(eseidel): We could use to separate these groups?
-      new SkyDemo('Stocks App (Old)', 'examples/stocks/main.sky'),
-      new SkyDemo('Touch Demo (Old)', 'examples/raw/touch-demo.sky'),
-      new SkyDemo('Spinning Square (Old)', 'examples/raw/spinning-square.sky'),
+      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('Licences (Old)', 'LICENSES.sky'),
     ];