Update README.md

Author: singularitti

README.md

@@ -4,6 +4,7 @@
 
 [![Stable docs](https://img.shields.io/badge/docs-stable-blue.svg)](https://mineralscloud.github.io/qha/)
 [![Build Status](https://travis-ci.com/MineralsCloud/qha.svg?branch=master)](https://travis-ci.com/MineralsCloud/qha)
+[![PyPI Downloads](https://static.pepy.tech/badge/qha)](https://pepy.tech/projects/qha)
 
 | category        | percent | downloads |
 | --------------- | ------- | --------- |