Add install instructions

Author: manzato

README.md

@@ -4,3 +4,28 @@
 [![codecov](https://codecov.io/gh/Ekumen-OS/ekumenlabs_config/branch/main/graph/badge.svg?token=mRGjPkrBjt)](https://codecov.io/gh/Ekumen-OS/ekumenlabs_config)
 [![black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 [![poetry-managed](https://img.shields.io/badge/poetry-managed-blueviolet)](https://python-poetry.org)
+
+## Installation
+
+### Pip
+
+`pip install ekumenlabs_config`
+
+### Pipenv
+
+`pipenv install ekumenlabs_config`
+
+### Poetry
+
+`poetry add ekumenlabs_config`
+
+### PDM
+
+`pdm add ekumenlabs_config`
+
+## Notes for maintainers
+
+### Release
+
+To create a new release, create a github release and a github action will take care of building and publishing. After
+that, there will be a PR automatically created to bump the version in `main`.