Created composer package

I just added everything that is necessary to install this using composer. I didn't want to break anything, so some stuff was kindof duplicated.

Also added Travis Configuration: [![Build Status](https://travis-ci.org/hco/Autoload.png?branch=master)](https://travis-ci.org/hco/Autoload)

I'd be willing to clean up a little bit, I just need your feedback :-)