Update README.md

Author: mathiasconradt

README.md

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 # Screen Cursor
 
 [![Build](https://github.com/mathiasconradt/screencursor/actions/workflows/build.yml/badge.svg)](https://github.com/mathiasconradt/screencursor/actions/workflows/build.yml) [![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=mathiasconradt_screencursor&metric=alert_status)](https://sonarcloud.io/summary/new_code?id=mathiasconradt_screencursor)
+[![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](LICENSE)
+[![Buy me a coffee](https://img.shields.io/badge/Buy%20me-a%20coffee-ff5f5f?logo=ko-fi&logoColor=white)](https://ko-fi.com/mathiasconradt)
+![GitHub stars](https://img.shields.io/github/stars/mathiasconradt/screencursor)
 
 Native macOS menu bar app that draws a configurable highlight circle around the cursor.