Switched version of angular required from ~1.0.8 to ^1.0.8, so that late...

...r versions of Angular (like 1.2) will work.

A developer added this to one of my projects (https://github.com/mastercoin-MSC/omniwallet), and we're using Angular 1.2.  Switching the version comparison from ~ to ^ will allow bower to install this extension on the newer version of angular, where it seems to work just fine.