Merge pull request #15 from jacobawenger/remove_persona

Removed Persona as an auth provider.
Tag release with persona removed
Configure a browserify standalone bundle through Grunt
Port to gulp
Convert the global util to an IIFE and append to the dist file
Lint code with jshint

Closes #13
Don't bundle sinon in browserify build

Lodash needs to stay in the bundle since its utils are necessary for
all users. Sinon can be optional for people using Jasmine.

Closes #4
Remove sinon as a dependency (#4)
Test in PhantomJS using Karma to verify browser compatibility
Add release task, provides support for Bower

Closes #11