add initState, rename animated_container

sky/sdk/example/fitness/lib/main.dart

Index: sky/sdk/example/fitness/lib/main.dart
diff --git a/sky/sdk/example/fitness/lib/main.dart b/sky/sdk/example/fitness/lib/main.dart
index 6d447a831e4a8599e832fd43f7d43f8ab0e5e770..5368c91db64b23016bed147d383ededd7f75ddd4 100644
--- a/sky/sdk/example/fitness/lib/main.dart
+++ b/sky/sdk/example/fitness/lib/main.dart
@@ -16,7 +16,9 @@ import 'fitness_types.dart';
 class FitnessApp extends App {
 
   NavigationState _navigationState;
-  FitnessApp() {
+  FitnessApp();

[abarth-chromium, 2015/07/10 23:26:00]

You can remove this function given that it has now body.

+
+  void initState() {
     _navigationState = new NavigationState([
       new Route(
         name: '/', 
@@ -27,6 +29,7 @@ class FitnessApp extends App {
         builder: (navigator, route) => new SettingsFragment(navigator, backupSetting, settingsUpdater)
       ),
     ]);
+    super.initState();
   }
 
   void onBack() {