Added slope checking. Seems to be very slow currently though, probably due to having to do trig functions.
Merge remote-tracking branch 'origin/master'

Conflicts:
	Assets/MainScene.unity
	Assets/Standard Assets/Materials/MeshMaterial.mat
	Library/ScriptAssemblies/Assembly-CSharp-firstpass.dll
	Library/ScriptAssemblies/Assembly-CSharp-firstpass.dll.mdb
	Library/ScriptAssemblies/Assembly-CSharp.dll
	Library/ScriptAssemblies/Assembly-CSharp.dll.mdb
	Library/ScriptAssemblies/Assembly-UnityScript-firstpass.dll
	Library/ScriptAssemblies/Assembly-UnityScript-firstpass.dll.mdb
	Library/ScriptAssemblies/Assembly-UnityScript.dll
	Library/ScriptAssemblies/Assembly-UnityScript.dll.mdb
	Library/assetDatabase3
	Library/guidmapper