Updated README
Small code improvements
Added a check so only instances of ContextualUndoView are swipeable.  Allowing for mixing of view types with some un-dissmissible
Added support for auto deletion after a delay when an item is removed by swipe, and two example activities
Added shouldAnimate method
Removed TextSwitcher and CountDownTimer, now uses Handler.postDelayed().
Merge branch 'dev' into pr/n23_maxjspaulding

Conflicts:
	example/project.properties
	library/project.properties
	library/src/com/haarman/listviewanimations/itemmanipulation/contextualundo/ContextualUndoAdapter.java
	library/src/com/haarman/listviewanimations/itemmanipulation/contextualundo/ContextualUndoListViewTouchListener.java
Merge branch 'pr/n23_maxjspaulding' into dev