[Galene] Heads-up: built-in TURN server

[Juliusz Chroboczek <jch@irif.fr>]

I've just added an IPv-only TURN server to Galène.


# If you've already configured a TURN server and it works

Please add 

  -turn ""

to Galène's command line.


# If you're not currently running a TURN server

If you've got a global IP address on your server, a TURN server will
automagically appear the next time you update Galène.  Please make sure
that your firewall doesn't block port 1194 UDP or TCP, or else reconfigure
Galène to use a different port for TURN:

  -turn :1234

If your server is behind NAT, please make sure you forward ports 1194/UDP
and 1194/TCP in addition to port 8443, and tell Galène your global
(public) address:

  -turn 192.0.2.1:1194


# If you don't want to be running a TURN server

Disable Galène's built-in server by adding the following to the command
line:

  -turn ""


# Please help

Please read the new version of the README file, and let me know if there's
anything that's not clear enough.