Finalize user, dev & deployment docs

[Rahuljagwani]

No description provided.

[uniqueg]

Again, I think it's a good idea to write examples and documentation progressively, with every PR, as you go along.

However, you can keep this issue for giving the docs a final overhaul once the service is fully functional.

Also check out the API docs issue on the TESK project board, which also covers some doc hosting options.