chore(package): update google-closure-compiler to version 20151216.0.0

http://greenkeeper.io/

package.json

@@ -19,7 +19,7 @@
     "browserify": "~12.0.1",
     "del": "~2.2.0",
     "eslint-plugin-angular": "~0.15.0",
-    "google-closure-compiler": "~20151015.0.0",
+    "google-closure-compiler": "~20151216.0.0",
     "gulp": "~3.9.0",
     "gulp-angular-templatecache": "~1.8.0",
     "gulp-autoprefixer": "~3.1.0",