Rename mdv -> template_binding, remove experiemntal apis from dart:html

pkg/polymer_expressions/example/example.dart

Index: pkg/polymer_expressions/example/example.dart
diff --git a/pkg/polymer_expressions/example/example.dart b/pkg/polymer_expressions/example/example.dart
index 5266311bab6b6606e430cc5a1d0fde702d7139ee..380e15544bd1796e86eddf8e9f717808b159c2a9 100644
--- a/pkg/polymer_expressions/example/example.dart
+++ b/pkg/polymer_expressions/example/example.dart
@@ -5,13 +5,12 @@
 import 'dart:html';
 
 import 'package:logging/logging.dart';
-import 'package:mdv/mdv.dart' as mdv;
 import 'package:polymer_expressions/polymer_expressions.dart';
+import 'package:template_binding/template_binding.dart' show templateBind;
 
 import 'person.dart';
 
 main() {
-  mdv.initialize();
   new Logger('polymer_expressions').onRecord.listen((LogRecord r) {
     print("${r.loggerName} ${r.level} ${r.message}");
   });
@@ -23,9 +22,9 @@ main() {
     'people': [john, justin],
   };
 
-  query('#test')
+  templateBind(querySelector('#test'))
       ..bindingDelegate = new PolymerExpressions(globals: globals)
       ..model = john;
 
-  query('#test2').model = john;
+  templateBind(querySelector('#test2')).model = john;
 }