Blue MIT license badge in README.md (should be Apache 2.0)

Please see https://github.com/miguelmota/streamhut#streamhut.

Blue MIT license badge [![License](http://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/streamhut/streamhut/master/LICENSE) links to streamhut's LICENSE which is actually Apache 2.0 license.