Update README.md

Author: Pytlicek

README.md

@@ -4,6 +4,7 @@
 [![Sourcery](https://img.shields.io/badge/Sourcery-enabled-brightgreen)](https://sourcery.ai) 
 [![Black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/ambv/black) 
 [![Known Vulnerabilities](https://snyk.io/test/github/pytlicek/fastapi-featureflags/badge.svg)](https://snyk.io/test/github/pytlicek/fastapi-featureflags) 
+![Twitter Follow](https://img.shields.io/twitter/follow/Pytlicek?color=1DA1F2&logo=twitter&style=flat)