enable travis cache for composer
enable travis cache for composer

geoffroycochard/platform,ramunasd/platform,trustify/oroplatform,orocrm/platform,Djamy/platform,trustify/oroplatform,geoffroycochard/platform,orocrm/platform,ramunasd/platform,Djamy/platform,Djamy/platform,ramunasd/platform,geoffroycochard/platform,orocrm/platform,trustify/oroplatform