Transform ICS calendar file to Baikal database
--ics=xxx ICS file to import (require)
--sqlite=xxx Baikal SQLite DB (require)
--calendarid=x Calendar ID to import event (require)
--usage or --help Display this message
--quiet No output
perl ics2baikal.pl --ics=bob.ics --sqlite=db.sqlite --calendarid=15