Hotfixed build problem in DTLog
Merge pull request #73 from obviousengineering/dtactionsheet

DTActionSheet & DTAlertView working on iOS 6, 7 & 8
Merge branch 'release-1.7.2'
changed that self.delegate is not overridden because UIAlertView seems to use self.delegate internaly in iOS8.
This caused that the block callbacks did not work anymore.
So I introduced a property alertViewDelegate, that can be uses like the UIAlertView delegate property.
If someone uses the setDelegate methods, a warning is shown.