After several fellow developers reported that they where unable to compile their apps having followed the previous DTCoreText Readme I felt that I needed to create a new Setup Guide. So I did that for the better part of a day, painstakingly verifying each individual step and documenting how the recommended approaches would be.
I used a relatively new feature of appledoc to create Programming Guides which allows to add markdown files that get transformed the same way to HTML as the header comments are.
You can also add images and cross references, which unfortunately seem to have a mind of their own. But I finally found a way how to get it what I wanted it to do and you can see the results online.