Depend on angular 1.2 <= x < 2.0 rather than 1.2.0 <= x < 1.3

Change bower.json to loosen the requirement on AngularJS versioning.

I'm using this module with AngularJS 1.3 and it's working fine.  It'd be great if you could merge and bump a release so I can use bower/RailsAssets to manage it in my app.