Update readme

[jonnyarnold]

NB. We're deliberately going to merge this without review to test Samuel. Honest.

[reevoo-samuel]

_If you're new, read the guidelines._

Good code is tested, easy to understand and able to cope when things go wrong.

Good pull requests are descriptive, small and short-lived.

• [ ] Code has been reviewed.
• [ ] Description explains what you have done and why.
• [ ] Tests are green on CI (or pulled/tested on another machine).
• [ ] Documentation has been created or updated.

[reevoo-samuel]

I don't see any comments on your Pull Request.

Are you too good for code reviews now? No. No you aren't.

Maybe you forgot to say who reviewed it. That's fine, but let me know.