Add plugin for backbone
Get basic bindings working
Add transform functionality to binding
Clean up backbone plugin code
Change plugin api
Add deferred attribute binding test
Restructure tests
Change `to.be.equal` to `to.equal`
Replace plugins with class hierarchy
Add `Element.setAttr` hook for setting attributes
Add bind for backbone on attributes
Plugins are nuked
Enable test for plain argument
Add support for Backbone.Model