Does readme need some changes?

[rgleason]

prerequisites:

python 2 or 3 installed with wxpython (install with pip install -U wxPython)
udp clients listening to broadcasts (0.0.0.0) on socket 10111, or
some nmea listener listening on localhost tcp/20220 (change the code for this)

[marcobergman]

You seem to have and old readme; it listens out on 10110 nowadays. I used 10111 in the past to coexist with a default signalk install.

[rgleason]

Thanks