Updated AngularJS to 1.0.6, and some cleanup

Hi,
I'm interested in the plugin, so I just updated it a little (required plugins, update AngularJS to latest stable 1.0.6), and do some small cleanup (like Burt did some time ago in one of my Grails Plugins). Set Apache license, and add LICENSE Header for all sources.

I hope you like all updates.
Tell me if you need some info.

Regards,
Sandro