Yann Gravrand

Seems to run but no real-world test done so far.

... doesn't work for now. We must use python2: ``` apt install libpython-dev virtualenv redis-server virtualenv .venv2; source .venv2/bin/activate ```

I tested ``steppy`` on a Raspberry Pi (model A) and on a C.H.I.P ($9). It launches! But when reacting to midi messages, for example when turning knobs on the Launch...