Unselect event will now be triggered when an item is deselected. Return payload for this event will include the target data and a list of all selected items.
Merge branch '3.1.0-wip' of https://github.com/ExactTarget/fuelux into 3.1.0-wip

Conflicts:
	index.js
Merge pull request #700 from dwaltz/3.1.0-wip

Select tree item/folder event modifications