If you normally start it with "sudo god -c /path/to/config.god"
then you can have it start at boot just by putting
/path/to/god -c /path/to/config.god
as the penultimate line in /etc/rc.local
(on the line before the final exit 0
god will be started at boot.
This is quick, dirty (in that there is no error checking or reporting) and simple.