Converted to arc and updated SDWebImage (63178bd)
MWPhoto: Removed SDWebImage delegate methods and replaced with blocks.
Demo Project: Updated project settings.
Merge branch 'master' of https://github.com/swaterfall/MWPhotoBrowser

Conflicts:
	MWPhotoBrowser/Classes/MWPhoto.m
	MWPhotoBrowser/Libraries/SDWebImage/MKAnnotationView+WebCache.h
	MWPhotoBrowser/Libraries/SDWebImage/MKAnnotationView+WebCache.m
	MWPhotoBrowser/MWPhotoBrowser.xcodeproj/project.pbxproj