Setup a Symfony project and add the list of dependencies of a package

reference #9

This is for review only for the moment. I need to refactor some stuff.

To make this run without configuring anything, install lighttpd (without launching it) and run `php symfttpd.phar spawn -t` then you'll have a running lighttpd server listening `http://127.0.0.1:4042/app_dev.php`

To try the dependecy list got to `/phpspec/phpspec2` for instance.