Add composer to installation in README
Add composer to installation in README

adamlundrigan/ZfcUser,adamlundrigan/ZfcUser,nepda/ZfcUser,Hawa-Abdo/ZfcUser,Eye4web/ZfcUser,stijnhau/ZfcUser,pso-vertrieb/ZfcUser,nepda/ZfcUser,stijnhau/ZfcUser,ZF-Commons/ZfcUser,Hawa-Abdo/ZfcUser,claytondaley/ZfcUser,zf2timo/ZfcUser,zf2timo/ZfcUser,ZF-Commons/ZfcUser,CerebroVasconcelos/ZfcUser,claytondaley/ZfcUser,shipleyr/ZfcUser,pso-vertrieb/ZfcUser,CerebroVasconcelos/ZfcUser