Deletes README.md and moves licensing information into a separate file

It's considered best practice to store software license information in a
separate file called, LICENSE.

Here's what GitHub has to say:

"As long as your intention is clear, you can place your license information
wherever you like. Some projects only include a descriptive line in the
project's README (e.g., "This projected is licensed under the terms of the MIT
license."). However, to avoid any potential ambiguity, it's best to include the
license file with your project as well."

https://help.github.com/articles/open-source-licensing/#where-does-the-license-live-on-my-repository