Update README.md

Author: chandr-andr

README.md

@@ -1,5 +1,7 @@
 [![PyPI - Python Version](https://img.shields.io/badge/PYTHON-3.9%20%7C%203.10%20%7C%203.11%20%7C%203.12%20%7C%203.13-blue?style=for-the-badge
 )](https://pypi.org/project/psqlpy/)
+[![PyPI - Python Version](https://img.shields.io/badge/Tested%20On%20PostgreSQL-14%20%7C%2015%20%7C%2016%20%7C17-2be28a?style=for-the-badge
+)](https://pypi.org/project/psqlpy/)
 [![PyPI](https://img.shields.io/pypi/v/psqlpy?style=for-the-badge)](https://pypi.org/project/psqlpy/)
 [![PyPI - Downloads](https://img.shields.io/pypi/dm/psqlpy?style=for-the-badge)](https://pypistats.org/packages/psqlpy)