Added PIL requirement because it was missing.
Added PIL requirement because it was missing.

diox/app-validator,stasm/app-validator,diox/app-validator,mstriemer/app-validator,mozilla/app-validator,mozilla/app-validator,mozilla/app-validator,mattbasta/perfalator,mattbasta/perfalator,diox/app-validator,eviljeff/app-validator,eviljeff/app-validator,eviljeff/app-validator,mstriemer/app-validator,stasm/app-validator,eviljeff/app-validator,mozilla/app-validator,stasm/app-validator,mattbasta/perfalator,stasm/app-validator,mstriemer/app-validator,diox/app-validator