The following tutorial demonstrates how to create a new swh module in the current swh
phabricator instance and reference it so the Continuous Integration (CI) is able to
build the new module.
It's problem oriented so it's more an how-to 
I've added it to the "tutorials" tree though as we don't have
a "how to" section yet... Shout out if that's not ok with you.
 https://documentation.divio.com/ (that's the approach we are trying to reach)
Related to T3179