update readme

Author: jonassorgenfrei

README.md

@@ -1,4 +1,6 @@
 # flowpipe-editor
+[![Version](https://img.shields.io/pypi/v/flowpipe_editor.svg)](https://pypi.org/project/flowpipe_editor/) [![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](LICENSE) ![PyPI - Python Version](https://img.shields.io/pypi/pyversions/flowpipe_editor)  [![Black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
+
 QT Editor for the flowpipe framework based on NodeGraphQt.
 
 ![flowpipe-editor](docs/img/flowpipe-editor.png)