doc: publish instructions

README.md

@@ -110,6 +110,15 @@ isort app_skellington
 flake8 app_skellington
 ```
 
+Publish:
+
+```
+# Create a tag with the desired version number:
+git tag -a v0.2.0 -m "0.2.0 provides modern pyproject.toml build with setuptools, versioning, and publishing"
+git push origin v0.2.0
+python -m build
+twine upload dist/*
+```
 
 
 # Version