Add downloads badge to README

README.md

@@ -5,6 +5,7 @@
  <p align="center">
      <a href="https://pypi.org/project/connexion"><img alt="coveralls" src="https://img.shields.io/pypi/status/connexion.svg?style=flat-square&color=brightgreen"></a>
      <a href="https://pypi.org/project/connexion"><img alt="PyPI version" src="https://img.shields.io/pypi/v/connexion?color=brightgreen&style=flat-square"></a>
+     <a href="https://pypistats.org/packages/connexion"><img alt="PyPI" src="https://img.shields.io/pypi/dm/connexion?style=flat-square&color=brightgreen"></a>
      <a href="https://github.com/spec-first/connexion/blob/main/LICENSE"><img alt="License" src="https://img.shields.io/pypi/l/connexion?style=flat-square&color=brightgreen"></a>
      <a href="https://github.com/spec-first/connexion/actions/workflows/pipeline.yml"><img alt="GitHub Workflow Status" src="https://img.shields.io/github/actions/workflow/status/spec-first/connexion/pipeline.yml?style=flat-square"></a>
      <a href="https://coveralls.io/github/spec-first/connexion?branch=main"><img alt="Coveralls" src="https://img.shields.io/coverallsCoverage/github/spec-first/connexion?style=flat-square"></a>