Merge pull request #9 from monarch-initiative/feat-update_readme

update poetry install info

README.md

@@ -27,6 +27,16 @@ from this repo, do a
 poetry install
 ```
 
+If Poetry is not already installed, follow these instructions:
+- create a virual environment ([venv](https://docs.python.org/3/library/venv.html#creating-virtual-environments) or [conda](https://conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html#creating-an-environment-with-commands))
+- activate the virtual environment
+- run `pipx install poetry`
+    - install `pipx` (as needed) following these [details](https://pipx.pypa.io/stable/installation/)
+- clone the `mondolib` repo
+- run `poetry install` from within `mondolib` directory
+Note: this repo is known to work with Python 3.9 (and may also work with 3.10 or 3.11 or 3.12) as of 21-Mar-2024.
+
+
 ## Modules
 ### QC
 This has intentionally bespoke and mondo-unique checks