Add contributing info to README

Author: mfisher87

README.md

@@ -1,3 +1,41 @@
 # Open Source Geospatial Workflows in the Cloud
 
 Learn about Tools and Techniques for Data Access, Analysis, Visualization, Storytelling, and Sharing in the Python and Jupyter ecosystem
+
+
+## Contributing
+
+This repository uses [`pixi`](https://pixi.sh) (at least for now) for managing
+dependencies and tasks.
+To start up a website preview server, run `pixi run preview`.
+
+
+### Checks
+
+This repository uses [`pre-commit`](https://pre-commit.com/) for quality checks.
+To initialize `pre-commit` on this repo:
+
+```
+pre-commit install
+```
+
+You only need to do this once!
+
+
+### Previewing
+
+```
+pixi run preview
+```
+
+
+### 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/)