Please add a license

[baurst]

Hi,
first of all let me say thank you for the great work! :) I was thinking about trying it out, but I have noticed that there is no license included in the project. Without a license, the work is under exclusive copyright by default. Could you please add one? You could check out choosealicense.com if you are unsure which license fits your needs.
Thank you very much.

[aharley]

Added MIT license. Thanks!