…appropriate selector on the actionSheetDelegate
…s 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.
…nit so all initializers work correctly on iOS 8, iOS 7 and iOS 6. Also updated examples a little.