Idea from @samuk.

Ooh - I hadn't heard of riot thanks! In fact this project started with this post to the Signal forum: https://community.signalusers.org/t/i-want-to-add-cheap-wireless-mesh-radios-an-early-proposal-feedback-requested/11334

And I did an early proof of concept with a hacked up version of Signal: https://github.com/geeksville/Meshtastic-Signal-Android/blob/master/KH-notes.md

So when we get a little farther (3ish wks?) and the time for the 'real' Signal integration perhaps riot might be a better choice. We'll need to look around, opening this issue to track.