AngularJS goo.gl shortener example

In case you're interested: Here's a basic AngularJS example that looks like this (but you can't see the fancy animations in the screenshot :sparkles:):

![screenshot from 2013-08-14 23 02 47](https://f.cloud.github.com/assets/9906/965160/f54c616c-0524-11e3-9160-350b6a3169a3.png)

I tried to keep some meaningful commits, but I can of course squash them, if you like.