Totally agree. Adding a wiki could be also useful. Some screenshots too.
Wiki added. What kind of pages do you think I should have?
I would start writing an introduction with the state of art. Why you started the project, if there is any others projects doing the same. A small diagram of the technologies that you are using/architect.
Of course in README.md at least how to start the project locally and a small explanation to new developers.
Reading what it's there didn't make me understand exactly what's all this about.
Just my opinion. I hope my feedback helps you.
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