fix(angularFiles.js, changelog.js) remove unnecessary comma to avoid parse error

### Not sure how angularFiles.js was parsing

![screen shot 2013-09-01 at 2 33 47 pm](https://f.cloud.github.com/assets/1016365/1064775/4fb5896c-134e-11e3-8b73-21e82a87587d.png)