Add a --url parameter to rqscheduler

This matches the --url parameter that can be passed into rqworker. Makes usage on Heroku much easier.
Merge pull request #25 from zain/patch-1

Add a --url parameter to rqscheduler. Thanks @zain!
`path` argument added for rqscheduler script.

Works exactly like for RQ itself.
Fixed.
Merge pull request #27 from Aeron/master

Adds `--path` arguments for rqscheduler script.
Small tweaks for Python3 compatibility
Convert redis values to text in tests
Convert lists which are supposed to not contain items, as well
Merge pull request #29 from pib/master

Make rq-scheduler compatible with Python 3
dont enqueue jobs that are already queued
ugh, it wast he version #
Merge branch 'master' of https://github.com/braidlabs/rq-scheduler

Conflicts:
	rq_scheduler/scripts/rqscheduler.py