Introduce boot.js: this finally makes it possible to load and run Todomvc

example/todomvc/web/todo_row.dart

Index: example/todomvc/web/todo_row.dart
diff --git a/example/todomvc/web/todo_row.dart b/example/todomvc/web/todo_row.dart
index 4e2a75799b95d1a92e569899f7a23184957d5211..e221f17322be9fb4d63ea185f1d1782f849b5e3d 100644
--- a/example/todomvc/web/todo_row.dart
+++ b/example/todomvc/web/todo_row.dart
@@ -12,17 +12,22 @@ class TodoRow extends PolymerElement with ObservableMixin {
   @observable Todo todo;
 
   bool get applyAuthorStyles => true;
-  ScopedCssMapper get css => getScopedCss("todo-row");
+
+  // TODO(sigmund,terry): bring back scoped-css polyfills
 
   created() {
     super.created();
     var root = getShadowRoot("todo-row");
     var label = root.query('#label').xtag;
-    var item = root.query('.' + css['.todo-item']);
+    var item = root.query('.todo-item');
 
-    bindCssClass(item, css['.completed'], this, 'todo.done');
-    bindCssClass(item, css['.editing'], label, 'editing');
+    bindCssClass(item, 'completed', this, 'todo.done');
+    bindCssClass(item, 'editing', label, 'editing');
   }
 
   void removeTodo() => appModel.todos.remove(todo);
 }
+
+_init() {
+  registerPolymerElement('todo-row', () => new TodoRow());
+}