added dependency integration via composer and made some minor code clean...

...ing.

this change removes the lib dir and gets the required dependency via composer. maybe we should add some composer info to the readme. not sure. 
we could link http://getcomposer.org/doc/00-intro.md#installation-nix for a "how to install composer" and http://getcomposer.org/doc/00-intro.md#using-composer for a "how to use".
the composer install command simply downloads the required dependencies and puts them where the generated autoloader in reclaim.php will find it.
take a look at the composer.json meta-info and tell me if something should be changed.
what do you think?