Add quality reference links to README (#50)

Author: RRosio

README.md

@@ -18,3 +18,15 @@ pre-commit install
 ```
 
 You only need to do this once!
+
+
+### Writing: quality, voice, style, formatting, andragogy, ?
+
+Reference [diataxis](https://diataxis.fr/) for quality guidance.
+
+Understand your audience. Which of the
+[four kinds of documentation](https://diataxis.fr/start-here/#the-four-kinds-of-documentation)
+are you writing?
+
+* [Learning-oriented tutorial](https://diataxis.fr/tutorials/)
+* [Understanding-oriented explanation](https://diataxis.fr/explanation/)