Add PyPI badge to README

Author: jobselko

README.md

@@ -1,5 +1,6 @@
 # pulp_python
 
+[![PyPI](https://img.shields.io/pypi/v/pulp_python)](https://pypi.python.org/pypi/pulp_python)
 ![Pulp Nightly CI/CD](https://github.com/pulp/pulp_python/actions/workflows/nightly.yml/badge.svg)
 
 A Pulp plugin to support hosting your own pip compatible Python packages.