add license type to gemspec
add license type to gemspec
sdbeng/simple_calendar,sdbeng/simple_calendar,rodrigoargumedo/simple_calendar,rodrigoargumedo/simple_calendar,timshingyu/simple_calendar,sdbeng/simple_calendar,rodrigoargumedo/simple_calendar,timshingyu/simple_calendar,TuxmAL/simple_calendar,excid3/simple_calendar,excid3/simple_calendar,timshingyu/simple_calendar,TuxmAL/simple_calendar,excid3/simple_calendar