How to get the "build" buttons to show up in README.md?

I’m talking about these:

eskeit.PNG

I am not sure what they’re called but they seem basically uniform throughout all of GitHub. Is this some built in option or just a popular trend?

They’re just a popular trend. I don’t think GitHub offers anything official here (although I’ve never gone looking myself.)

I believe this repo is responsible for generating those badges that you can use in your README: https://github.com/dwyl/repo-badges

​If there’s anything else I can help you with, let me know; so happy to help further!

Kindest regards,
Matthew