Update to work with marionette 1.0.0rc3

I've just updated marionette on a project using Geppetto and some things broke. Mostly because Marionette has now removed EventBinder (in favour of the listenTo methods now in Backbone). I've tried fixing them here and it seems to be working for the tests and examples in this project. Integrating it into our project now - I'll let you know how it goes there...