Fixed iOS8 problems in DTActionSheet, created demo for DTActionSheet
Fixed DTAlertView test on iOS7, now I don't call a show -> (was iOS problem)
Preventing warning when delegate is set nil
didPresentActionSheet: and willPresentActionsheet: now check for the appropriate selector on the actionSheetDelegate
Merge pull request #78 from MPiccinato/DelegateForwardingFix

Crash on didPresentActionSheet: and willPresentActionsheet:
Merge branch 'rp-alertViewDelegate' of github.com:Cocoanetics/DTFoundation into dtactionsheet

Conflicts:
	Core/Source/iOS/BlocksAdditions/DTActionSheet.h
	Core/Source/iOS/BlocksAdditions/DTActionSheet.m
	Core/Source/iOS/BlocksAdditions/DTAlertView.m
DTActionSheet: Fixed warning due to using wrong delegate type