Definition of a License

Hi, I want to define a License to this plugin.

The license of php-cs-fixer is the MIT, and hope to inherit that license.

Of course, author' name is *Stéphane PY* : )

If you're thinking the same, I will send pull-request.

#### Please see more

* [The license of php-cs-fixer](https://github.com/fabpot/PHP-CS-Fixer/blob/master/LICENSE)

* [The MIT License](http://opensource.org/licenses/MIT)