Added warning for setting result ttl value for repeated jobs to the Readme file.
Added warning for setting result ttl value for repeated jobs to the Readme file.

Right now, there's no explicit warning for the fact that, if you set a low result TTL value, the key will expire and the job will not get re-scheduled.

cheungpat/rq-scheduler,ihuro/rq-scheduler,peergradeio/rq-scheduler,ui/rq-scheduler,lechup/rq-scheduler,mbodock/rq-scheduler,sum12/rq-scheduler