This is something I was not able to find clear information on. Specifically, I wanted to add a flow chart I’d created to the wiki. I’ll also be adding an ER diagram later. It’s cool to have the important development documents somewhere where they can be accessed and perhaps edited from anywhere by anyone if need be. Github has a failing in this regard I think. They should have an interface for this.
The trick of it all is the wiki is itself a git repo. What you have to do is check out that repo. In my case, my project was https://github.com/jazahn/HarvardCards. To checkout that project, you would use the command:
clone git@github.com:jazahn/HarvardCards.git .
But that’s the project. The wiki is:
clone git@github.com:jazahn/HarvardCards.wiki.git .
So you have to check that out, add the image file to it, and then you can [[add the image]] via relative path image link. https://github.com/jazahn/HarvardCards/wiki/Flashcard-Flowchart