fixes some typos on README
fixes some typos on README
excid3/simple_calendar,sdbeng/simple_calendar,rodrigoargumedo/simple_calendar,sdbeng/simple_calendar,sdbeng/simple_calendar,excid3/simple_calendar,TuxmAL/simple_calendar,TuxmAL/simple_calendar,timshingyu/simple_calendar,timshingyu/simple_calendar,timshingyu/simple_calendar,rodrigoargumedo/simple_calendar,excid3/simple_calendar,rodrigoargumedo/simple_calendar