chore(package): update google-closure-compiler to version 20160315.2.0

http://greenkeeper.io/

package.json

@@ -20,7 +20,7 @@
     "browserify-istanbul": "~2.0.0",
     "del": "~2.2.0",
     "eslint-plugin-angular": "~1.0.0",
-    "google-closure-compiler": "~20160315.1.0",
+    "google-closure-compiler": "~20160315.2.0",
     "gulp": "~3.9.0",
     "gulp-angular-templatecache": "~1.8.0",
     "gulp-autoprefixer": "~3.1.0",