fix #151 zoom launch transition by extracting scale factor from transform
fix #151 zoom launch transition by extracting scale factor from transform

jrassa/EmulationStation,joolswills/EmulationStation,jrassa/EmulationStation,joolswills/EmulationStation,jrassa/EmulationStation,zigurana/EmulationStation,jrassa/EmulationStation,joolswills/EmulationStation,zigurana/EmulationStation,joolswills/EmulationStation,zigurana/EmulationStation