Created by: jbovenschen
This changes the proposed way about using prettier inside the README.md, because prettier supports css since the 1.4.0 release and json since the 1.5.0 release.
Was not sure if it was a good idea to add different regexes for json and css inside the README.md don't have a real opinion about it myself, could maybe easier for starters to do so if they wan't to add things like eslint or stylelint the the commit hooks.