Make stocks-fn match the style for the Sky SDK

sky/examples/stocks-fn/main.sky

Index: sky/examples/stocks-fn/main.sky
diff --git a/sky/examples/widgets-fn/main.sky b/sky/examples/stocks-fn/main.sky
similarity index 72%
copy from sky/examples/widgets-fn/main.sky
copy to sky/examples/stocks-fn/main.sky
index c7c304f909ccda7358239dead1ebf84bf5f003ed..16c1688884305284c079408b50946ac8359ef4f2 100644
--- a/sky/examples/widgets-fn/main.sky
+++ b/sky/examples/stocks-fn/main.sky
@@ -7,9 +7,10 @@
 <sky>
 <import src="/sky/framework/debug/shake-to-reload.sky" />
 <script>
-import 'widgets_app.dart';
+// TODO(abarth): Should this be package:stocks/stocks_app.dart?
+import 'lib/stock_app.dart';
 main() {
-  new WidgetsApp();
+  new StocksApp();
 }
 </script>
 </sky>