Check this out https://github.com/anvaka/map-of-github#how-was-it-made https://github.com/anvaka/map-of-github#how-was-it-made - I gave a short overview there -

Check this out https://github.com/anvaka/map-of-github#how-was-it-made https://github.com/anvaka/map-of-github#how-was-it-made - I gave a short overview there - does this help?