REDIS_URL should be a CL arg for sensors-src (or something)

[rpj]

REDIS_URL handling needs to be fixed, is really the point.

[mheirendt]

I've configured redis in the config.json file as follows:
{ redis_config: { host: 'host', port: port, db: 0 } }

And am seeing the following stack trace:

Traceback (most recent call last): File "./sensors-src", line 45, in <module> ns = sens.create(s['name'], config=s['config'] if 'config' in s else None, redis_cfg=redis_cfg) File "/usr/projects/rpi/env/local/lib/python2.7/site-packages/rpjios/Sensors.py", line 29, in create return cf(**config) if config else cf() File "/usr/projects/rpi/env/local/lib/python2.7/site-packages/rpjios/SensorBase.py", line 17, in wrapper func(*args, **kwargs) File "/usr/projects/rpi/env/local/lib/python2.7/site-packages/rpjios/SensorBase.py", line 26, in wrapper func(*args, **kwargs) File "/usr/projects/rpi/env/local/lib/python2.7/site-packages/rpjios/sensors/SEN12642.py", line 9, in __init__ super(Factory, self).__init__(*args, **kwargs) File "/usr/projects/rpi/env/local/lib/python2.7/site-packages/rpjios/AnalogBase.py", line 10, in __init__ super(Analog, self).__init__(*args, **kwargs) File "/usr/projects/rpi/env/local/lib/python2.7/site-packages/rpjios/SensorBase.py", line 59, in __init__ self._sub = Subscriber(channel=self.channel) File "/usr/projects/rpi/env/local/lib/python2.7/site-packages/rpjios/SubscriberBase.py", line 17, in __init__ super(Subscriber, self).__init__(*args, **kwargs) File "/usr/projects/rpi/env/local/lib/python2.7/site-packages/rpjios/RedisBase.py", line 13, in __init__ self._r = redis.StrictRedis(**kwargs) TypeError: type object argument after ** must be a mapping, not NoneType Exception AttributeError: "'Subscriber' object has no attribute '_psunsubfunc'" in <bound method Subscriber.__del__ of <rpjios.SubscriberBase.Subscriber object at 0xb6519bd0>> ignored