upgrade backbone to 1.1.1 and underscore to 1.6.0

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

architecture-examples/backbone/bower.json

@@ -2,8 +2,8 @@
   "name": "todomvc-backbone",
   "version": "0.0.0",
   "dependencies": {
-    "backbone": "~1.1.0",
-    "underscore": "~1.5.0",
+    "backbone": "~1.1.1",
+    "underscore": "~1.6.0",
     "jquery": "~2.0.0",
     "todomvc-common": "~0.1.4",
     "backbone.localStorage": "~1.1.0"