It looks like a cool project and they say it's still in early stages. It's a pity they don't put pictures on the splash page. Pictures communicate better than anything else what the capabilities of the tool are.
I think a README.md with the render in each directory would be useful or maybe one README.md in the examples dir that refers to each example with a bit of context of why it might be something to do/use would suffice?
The thing makes graphs for Christ's sake.
Your github link is just a dump of source code. One would have to go through a lot of steps to actually see what they even render.