Armour for wall now up and unstoppable.
Normal Walls are currenly indestructable.
Variable height now implemented. Need to tweek values for heights.
Also hammer now smashy smashes.
Merge master into callums
Merge branch 'master' into callums

Conflicts:
	GGJ14/Assets/main.unity
Removed Debug.Logs and built cabin.
Colour and background and levels and things.
Merge branch 'master' into emily

Conflicts:
	GGJ14/Assets/Prefabs/Wall.prefab
Modify levels to make them fun.