Updated to not use tintColor: due to collision with iOS7 methods
Disabled buttons weren’t being setup correctly
Exposed the “disabled” property
Exposed the “confirmed” property
Exposed Cancel method
isDisabled wasn’t working
selected collision was causing issues
Selecting the button wasn’t toggling it any more
cancelling now resets the disable string
Fixed a memory bug when retaining the Tint.
Merge remote-tracking branch 'origin/iOS7Buttons'

Conflicts:
	MAConfirmButton.h
	MAConfirmButton.m
	Sample/SampleViewController.m