Add instructions on how to use "WIP" in merge requests

Signed-off-by: Joseph Nuthalapati <njoseph@thoughtworks.com>
Reviewed-by: James Valleroy <jvalleroy@mailbox.org>
2 jobs for master in 13 minutes and 20 seconds (queued for 6 seconds)
Status Job ID Name Coverage
  Test
passed #87620
run-unit-tests

00:05:59

24.52%
 
  Package
passed #87621
build-debian-package

00:07:20