Avoid retain cycle in SearchViewController::loadImagesWithOffset using __weak reference for self.
Add SWRevealViewController to Cocoapod.
Use SWRevealViewController - click on hamburger button or pull navigation bar to open menu for search engine selection.
Avoid retain cycle in SearchViewController::loadImagesWithOffset using __weak reference for self.
Add search providers through SWRevealViewController
Merge branch 'katyberg-master'

Conflicts:
	AMAImageSearch.xcodeproj/project.pbxproj
	AMAImageSearch/Classes/Controller/MenuViewController.h
	AMAImageSearch/Classes/Controller/MenuViewController.m
	AMAImageSearch/Classes/Controller/SearchViewController.h
	AMAImageSearch/Classes/Controller/SearchViewController.m
	AMAImageSearch/Resources/en.lproj/Main.storyboard