added pypi badge

Author: katzy687

README.MD

@@ -1,5 +1,6 @@
 [![Python 3.7](https://img.shields.io/badge/python-3.7-blue.svg)](https://www.python.org/downloads/release/python/)
 [![Lint and Test](https://github.com/QualiSystemsLab/Sandbox-API-Python/actions/workflows/lint-test.yml/badge.svg)](https://github.com/QualiSystemsLab/Sandbox-API-Python/actions/workflows/lint-test.yml)
+[![PyPI version](https://badge.fury.io/py/cloudshell-sandbox-rest.svg)](https://badge.fury.io/py/cloudshell-sandbox-rest)
 
 # Cloudshell Sandbox Rest Api Client