Missing license

Hi, Dave

I am adding your Skeleton to my project, and I while performing due diligence, I have discovered that the Git repository has no express licensing terms attached to it.  Your website states a license, though, so I've added the licensing terms from your website.

Feel free to pull the changes :-)

Kind regards,
Jan

```
Add licensing text from the Skeleton website

There was no license in the repository, but there was one on the
Skeleton's website[1].  Copy and paste the license, incorporate the MIT
license text from the opensource.org website[2].

 [1] http://www.getskeleton.com/#licenseandlog
 [2] http://www.opensource.org/licenses/mit-license.php
```