Modified to work with Ember 1.9
Rename bindStyle to follow Ember conventions.
Merge branch 'master' of https://github.com/michaljagielski-sc/bindstyle-ember-helper

Conflicts:
	src/bindstyle-ember-helper.js
Merge pull request #16 from michaljagielski-sc/master

Upgrading helper to be compatible with Ember 1.9