Requesting Better Docs

[anishhdiwan]

This repository seems great! However, it is a bit hard to understand and implement. Is it possible to add a short how-to kind of doc showing basic usage and going through the specifics (state spaces, action spaces, reward functions etc) of each env? It would also be great if the core API was documented in more detail (maybe similar to https://www.gymlibrary.dev/api/core/).

I'd be happy to contribute if a starter doc was added :)