Toon shading model

[Nate]

@Arnage;415872

Sure, go ahead!

Thanks!

So here you are:

4.9 branch
https://github.com/marynate/UnrealEngine/tree/4.9-toon

4.10 branch
https://github.com/marynate/UnrealEngine/tree/4.10-toon

Let me know if I messed up something.