Update Readme with correct commands

[vbuberen]

This PR updates the README file to have real command names, so users can just copy the command name instead of trying to find it in the source code.

I went through the source code to pick proper names and options for these commands.

Also, added one command, which wasn't mentioned before, but exists in the source code.

P.S. Thanks for such a useful set of tasks 🚀