Add more details about versioning to the README

[JoelMarcey]

📚 Documentation

Similar to what Babel did in babel/website#1814

Have you read the Contributing Guidelines on issues?

Yes

[Atul9]

I would like to work on this

[yangshun]

@Atul9 it's yours!

I've added an "issue: claimed" label so that others will know not to start work on the issue. If you change your mind about the issue, no worries! Just let me know so that I can remove the label and free it up for someone else to claim.

I'll check in with you periodically so that we can keep the task updated with the progress.

[Atul9]

@yangshun @JoelMarcey I have opened up a PR - #986