bump version to 2.2.1
bump version to 2.2.1

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