Fix: use the correct targets on Travis-CI

Reference:
http://till.klampaeckel.de/blog/archives/204-Whats-wrong-with-composer-and-your-.travis.yml.html
probably because you do it only after the self-update here. ``apc.enable_cli`` gives weird results with updating a phar (bug in APC, which will not be fixed as APC is not maintained anymore)