Add checkerboard pdf to repository and reference in v2 and v1 wiki

OpenPTrack / open_ptrack

Original open source people tracking library (now deprecated with the release of OPT v2 "Gnocchi").

http://openptrack.org/

BSD 3-Clause "New" or "Revised" License

319 stars 109 forks source link

Open jburkeucla opened 7 years ago