Add current viewer user table and map

[frenchja]

Methods

1. Pipe BASH output into R as a data.frame. Look into lsof -i :1935 | grep ESTABLISHED | awk '{print $9}' | grep something. Requires streamR to be installed on the same server distributing the RTMP stream.
2. Look into nginx-rtmp stats to serve up an endpoint instead.
3. Parse nginx-rtmp log file into R data.frame. Requires RTMP server-side installation.