Implementation of listenTo api wip.
Eventer listenTo api bug fixes and tweaks.
Eventer listenTo api wip.
Changed removeListeners in Eventer to remove all events if options is not passed as an argument.
Modified comment in Eventer.
Updated readme.md for next release.
Added controller.js to project and  modules. Moved controller code out of application.js into controller.js. Changed the ordering of files in grunt concat task.
listenTo, listenToOnce and stopListeningTo can now also take an array of events.
More work on requirejs dependencies, modfiied ordering in concat task accordingly.