`README.md` not in sync with code

[roberto-arista]

I've recently noticed that the ToDo section declares the positing as not completed, while it's not the case.

[roberto-arista]

If it's appreciated, I could try to do a general review of the documentation in the README

[typesupply]

That would be great. I never got around to really writing documentation for this thing so the readme is all we have. I wrote this thing as an experiment, it worked and I forgot to write the documentation.