New category UIImageView+EXKit.
Merge branch 'master' of https://github.com/jacobsologub/EXKit

Conflicts:
	EXKit/gui/views/UIImageView+EXKit.h
	EXKit/gui/views/UIImageView+EXKit.m
New categories UIAlertView+EXKit and UIActionSheet+EXKit.
Added ListenerList (cpp EXListenerList) wrapper back into the project.