20 - Added black style badge

Author: dineshtrivedi

README.md

@@ -4,6 +4,7 @@
 
 [![Build Status](https://github.com/PyCQA/pylint/actions/workflows/ci.yaml/badge.svg?branch=master)](https://github.com/PyCQA/pylint/actions)
 [![Coverage Status](https://coveralls.io/repos/github/PyCQA/pylint-plugin-utils/badge.svg?branch=master)](https://coveralls.io/github/PyCQA/pylint-plugin-utils?branch=master)
+[![Code Style](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/ambv/black)
 
 # About