Adds a sample for polymer internationalization/localization

samples/polymer_intl/web/messages_fr.dart

+/**
+ * DO NOT EDIT. This is code generated via pkg/intl/generate_localized.dart
+ * This is a library that provides messages for a fr locale. All the
+ * messages from the main program should be duplicated here with the same
+ * function name.
+ */
+
+library messages_fr;
+import 'package:intl/intl.dart';

[shailentuli, 2013/12/06 22:33:38]

unused import.

[Alan Knight, 2013/12/06 23:52:31]

OK. But these files are generated, so it'll come back if someone regenerates
them.

+import 'package:intl/message_lookup_by_library.dart';
+
+final messages = new MessageLookup();
+
+class MessageLookup extends MessageLookupByLibrary {
+
+  get localeName => 'fr';
+  static helloWorld() => "Bonjour tout le monde de Dart!";
+

[shailentuli, 2013/12/06 22:33:38]

Nit: remove extra blank line.

[Alan Knight, 2013/12/06 23:52:31]

Ditto.

+
+  final messages = const {
+    "helloWorld" : helloWorld
+  };
+}