Added a fence prefab

gives a nice border to the game
Adding transitions to animation
modified the changeState() to take i,j instead of global
move sphere to switch location
collision sphere moves to switch
Merge branch 'master' of https://github.com/SquirrelsWithAZ/unityFramework

Conflicts:
	perspective/Assets/scenes/tech.unity
	perspective/Assets/source/grid/props/Switch.cs
switch changes
switch changes