licence update

Hi,

When browsing your repository I noticed that it never was stated which license it was under, and I had to compare your LICENSE file to the MIT License word for word to make sure that it was in fact that license that was used.

This pull request updated the license file with a banner specifying that it is the MIT License and some line break updates that I got from the official Github MIT license (http://choosealicense.com/licenses/mit/).

Thanks for considering!