Add MIT License to Repository

On [Google Code][gc], this project is listed as having a MIT license. Without a `LICENSE` file checked into the repository, or it being mentioned in the `README`, it's hard to tell if it's still under the MIT license.

I'd gladly submit a pull request, but I'm unsure of who the copyright should belong to.

Thanks!

[gc]: http://code.google.com/p/android-binding/