FAQ entries on how to use ion-sfu

[grahamking]

All written by @leewardbound

Until now we didn't provide any direction on how to actually use ion-sfu. Now we do!

[codecov[bot]]

Codecov Report

Merging #496 (09d42c7) into master (7be82ab) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #496   +/-   ##
=======================================
  Coverage   41.69%   41.69%           
=======================================
  Files          23       23           
  Lines        2240     2240           
=======================================
  Hits          934      934           
- Misses       1184     1185    +1     
+ Partials      122      121    -1     

Impacted Files	Coverage Δ
pkg/sfu/router.go	47.64% <0.00%> (-1.18%)	:arrow_down:
pkg/sfu/subscriber.go	62.41% <0.00%> (+1.41%)	:arrow_up:

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[grahamking]

@tarrencev @OrlandoCo Please edit the text as you see fit. This came out of a long discussion on Slack between @leewardbound , @billylindeman and myself.

[tarrencev]

This is super awesome!