Update script version links in README

I updated the script links and formatting, and added configuration info.

Thanks @ressa

Thanks @gxleano, though the move is away from JavaScript dependencies → , Tagify could be a Drupal core candidate, since t makes reference fields ("Tags") so much more user friendly.

@ressa I completely agree with you that Drupal core should include something like that. I'm aware of an open issue where this is being discussed: https://www.drupal.org/project/drupal/issues/3222995 ✨ Implement chips based autocomplete designs Active

Thanks for sharing, it looks great. I left a note with a tip about Tagify, in case people need the feature right now. Have a nice day.