Add documentation for influxdb sink

[azrdev]

both variants, MQTT consumer plugin, and rtl433json_to_influx.py

[zuckschwerdt]

Thanks. Take a look at our examples. You really shouldn't use a log file to communicate. UDP with the syslog protocol will tolerate faults better. Also please try -M newmodel, the old keys are a mess -- you probably noticed ;)

[azrdev]

@zuckschwerdt look at the time stamps, I built this script quite a while ago, still works though.

and it's not using a file but a named pipe :)

[zuckschwerdt]

Thanks, I'll update the docs soon. We also now have a very minimal example script.

[zuckschwerdt]

We now have native InfluxDB support with #1192. Documentation will soon be updated to show all possibilities to interface.

[zuckschwerdt]

Documentation on some options for InfluxDB went in with dac4e63.