[Pas2js] Kurento lib

[Michael Van Canneyt]

Hello,

After Jitsi and OpenTok, the kurento media server API is now also supported for
those looking for a Video solution.

Kurento media server is an open source media server and accompagnying API:
https://www.kurento.org/
You can (if you wish so) obtain professional support for it:
https://openvidu.io/

I added a demo to the list of demos, but you will need to install a kurento
server yourself (it's really easy on an ubuntu linux, just an apt-get.)

The API is comparable to OpenTok, more so than Jitsi, and gives more control
over the process.  Disadvantage is you must create the API yourself.

Michael.