Add info to a README for docs

docs/README.md

@@ -0,0 +1,18 @@
+# Documentation Workflow
+
+* Ensure you're inside the virtual environment `poetry shell`
+* Run the live-reload server using `mkdocs serve`
+* Create new pages by adding new Markdown files
+
+## Commands
+
+- `mkdocs serve` - Start the live-reloading docs server.
+- `mkdocs build` - Build the documentation site.
+- `mkdocs -h` - Print help message and exit.
+
+## Project layout
+
+    mkdocs.yml    # The configuration file.
+    docs/
+        index.md  # The documentation homepage.
+        ...       # Other markdown pages, images and other files.