Cannon prefabs, different notes in different levels for cannons, different cannons in levels, difficulty adjustments
Merge branch 'master' of https://github.com/Hemaolle/expa-casual-gamejam-2013

Conflicts:
	The Game/Assets/Scenes/1.unity
	The Game/Assets/Scenes/2.unity
	The Game/Assets/Scenes/3.unity
	The Game/Assets/Scenes/4.unity