I'm not trying to be snarky but have you considered reading the code? Like I'll be honest I can't remember the last time I looked at docs at all instead of reading the code itself.
my guy what exactly are you expecting here? this is free as in beer code (apache license). no one is forcing you to use this and no one is asking anything of you for using it. i fully support people releasing their code (that took enormous amounts of blood sweat tears to get working) absolutely however they want to. if i'm interestd enough i'll figure it out and thank them.
so as i see it you have like three options if you are unhappy with that:
1. close the tab
2. dig into the impl and learn as you go
3. do 2 but also write docs
i just really believe i've covered literally all the cases that any reasonable (not whiney, not entitled) person would concede.
> the first issue in the repo is a "Request for a more verbose README", which I agree with.
posted today - do you think it might have something to do with this post we find ourselves convening on? i.e. no one was so bothered about a lack of docs until now?
edit:
i forgot actually something else you could do: email the author and ask nicely for some tips.