adding game_of_life sample

dart/samples/webcomponents/game_of_life/game_of_life.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-#library('isolate_sample');
+#library('game_of_life');
 
 #import('dart:html');
-#import('dart:isolate');
 #import('dart:math', prefix: 'Math');
+#import('package:dart-web-components/lib/js_polyfill/web_components.dart');
 
-#source('IsolateSample.dart');
+#import('components/components.dart');
 
-main() {
-  IsolateSample.main();
+void main() {
+  gameOfLifeComponentsSetup();
 }