Add gif and jpeg packages for travis
Add gif and jpeg packages for travis

CartoDB/Windshaft,wsw0108/Windshaft,wsw0108/Windshaft,manueltimita/Windshaft,HydroLogic/Windshaft,HydroLogic/Windshaft,manueltimita/Windshaft,CartoDB/Windshaft,HydroLogic/Windshaft,wsw0108/Windshaft,manueltimita/Windshaft,CartoDB/Windshaft