cleaned out old bindings

everything is broken
replaced EventEmitter with backbone events
added element and text bindings
lots of changes

- trimmed and improved API on bindings and scope
- added html binding
- removed destroy() from scope
- added getModels() to scope
- added detach() to binding
added each and if bindings
added if binding tests

and bug fixes
solidified the binding life cycle
fixed some issues with handlers
version bump