Add quickstart section to readme (#5370)
Add quickstart section to readme (#5370)

* Update README.md

Added sentence to make it more clear how to select and use a badge to add to a user's github repo.

* Update README.md

* Reformat

Co-authored-by: Pierre-Yves B <6d3ecdbad948719383ad1d7665a5487b925e0370@gmail.com>
Co-authored-by: Paul Melnikow <a88b7dcd1a9e3e17770bbaa6d7515b31a2d7e85d@paulmelnikow.com>
badges/shields,badges/shields,badges/shields