Update README.rst

Add package upload instructions

Signed-off-by: marcmac <marc.macintyre@gmail.com>

Author: marcmac

README.rst

@@ -27,8 +27,12 @@ reasonable build environment:
 After a while, you will get a wheel file at dist/transformer_engine-<stuff>.whl, where <stuff> includes
 both the branch tag as well as system information like the Python version.
 
-TODO: how to upload a wheel file to the augment PyPI server?
+# How to upload a wheel file to the augment PyPI server
+You must be in an environment with gcloud access to system-services-dev.  If twine prompts for a password, `you're doing it wrong <https://cloud.google.com/artifact-registry/docs/python/authentication#keyring-setup>`.
 
+.. code-block:: bash
+  pip install twine keyring keyrings.google-artifactregistry-auth
+  twine upload dist/$WHEEL_FILE --repository-url https://us-central1-python.pkg.dev/system-services-dev/pypi-public
 
 Transformer Engine
 ==================