Rename AppView to SkyBinding.

sky/examples/rendering/spinning_flex.dart

Index: sky/examples/rendering/spinning_flex.dart
diff --git a/sky/examples/rendering/spinning_flex.dart b/sky/examples/rendering/spinning_flex.dart
index 10a16795d2fc9da0bcdeeb5232d7cada2238f2f3..e3e50bcc966d60fbed75b25b729b5a2085faa8c3 100644
--- a/sky/examples/rendering/spinning_flex.dart
+++ b/sky/examples/rendering/spinning_flex.dart
@@ -6,14 +6,13 @@ import 'dart:sky' as sky;
 import 'dart:math' as math;
 
 import 'package:sky/app/scheduler.dart';
-import 'package:sky/app/view.dart';
 import 'package:sky/rendering/box.dart';
 import 'package:sky/rendering/flex.dart';
+import 'package:sky/rendering/sky_binding.dart';
 import 'package:vector_math/vector_math.dart';
 
 import '../lib/solid_color_box.dart';
 
-AppView app;
 double timeBase;
 RenderTransform transformBox;
 
@@ -34,7 +33,7 @@ void main() {
 
   RenderPadding root = new RenderPadding(padding: new EdgeDims.all(20.0), child: transformBox);
 
-  app = new AppView(root: root);
+  new SkyBinding(root: root);
 
   addPersistentFrameCallback(rotate);
 }