Composer integration, PSR coding standards

Hi, here is my proposal of improvement of your great work. Thank you for nice script. I've only added possibility to integrate your work into Composer to be able easily use it inside Composer-based projects. Also, I've found useful to migrate to PSR coding standards (it is used by most modern big PHP projects)
[`git mv` might not do what you think it does](http://stackoverflow.com/a/1094392). He likely made enough changes to the file that it's no longer recognized as a rename.