New contributing guidelines

[lynx]

Hey,

check this out, contributing has never been easier: https://github.com/gemrb/gemrb/blob/master/CONTRIBUTING.md

I've merged what we had on the wiki and in a more obscure file, converted it to Markdown format, added a bunch of stuff and there it is.

 

[Jarno Mikkola]

... quoted for kicks. Something you could do yourself too, and remove this post if you want. Yes, I understand that keeping things in one location makes things easier... but things go offline all the time.

EDIT: unquoted

Edited August 23, 2019 by lynx

[lynx]

Downtime is unlikely with github and everyone with a checkout or build will have a backup. Since it's already stale, I've updated your post, so it's not one more thing to keep updated. But thanks anyway!