updated dev-master composer alias for 1.7.x releases
updated dev-master composer alias for 1.7.x releases

robfrawley/LiipImagineBundle,prolixtechnikos/LiipImagineBundle,prolixtechnikos/LiipImagineBundle,robfrawley/LiipImagineBundle,liip/LiipImagineBundle,prolixtechnikos/LiipImagineBundle,liip/LiipImagineBundle