Add a license

[bwebster4]

Currently, at least as far as I can tell, there is no license included in the GitHub about how this code can be used. I'm not sure if it is expected for there to be one included automatically as part of UE4, so maybe this isn't a big deal. Although if anyone wanted to use the code outside of UE4 (such as just pulling some of the C++ code), it would be helpful to know what the rules and limitations are around that. As of right now, I think it would default to not being allowed.

I don't have any preference as to the license, just looking to clear up the ambiguity. Thanks!

[wezrule]

Oh yeh I should add one, but you have my permission to use it for what ever