Merge pull request #18 from gaylejj/master

Updated animationEngine
Constants problem resolved.
From this I'll add the stuff to the map engine and finish up the LocalNotifications
Refactoring.
1. This is before I make more permanent changes to the structure. The extension was always planned by me, this allows us to combine functionality without merge conflicts (also it allows for easy testing without conflict either).
2. Moved notification specific functionality, this allows us to manage UILocalNotifications from one place. I am planning to add Remote Notification support :).
Merge branch 'master' of https://github.com/DrunkardsWalk/DrunkardsWalk

Conflicts:
	DrunkardsWalk.xcodeproj/project.pbxproj
add left/right foot images
Merge branch 'master' of github.com:lee-leonardo/DrunkardsWalk
merge with remote master branch
add pbxproj and left/right foot images back to master branch
Merge pull request #20 from lee-leonardo/master

This should solve everything