Update README

Author: DavidMStraub

README.md

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+[![Build Status](https://travis-ci.org/DsixTools/python-wetrunner.svg?branch=master)](https://travis-ci.org/DsixTools/python-wetrunner) [![Coverage Status](https://coveralls.io/repos/github/DsixTools/python-wetrunner/badge.svg?branch=master)](https://coveralls.io/github/DsixTools/python-wetrunner?branch=master)
+
+
 # python-wetrunner
 
-A Python package for the renormalization group (RG) evolution in the
-Weak Effective Theory (WET).
+A Python package for the renormalization group (RG) evolution in the Weak Effective Theory (WET).
+
+
+
+## Installation
+
+```bash
+pip3 install wetrunner
+```
+
+## Contributors
+
+- David M. Straub
+- Jason Aebischer
+- Xuanyou Pan
+
+## Credits
+
+The evolution matrices are based on the paper
+[arXiv:1704.06639](https://arxiv.org/abs/1704.06639)
+by Jason Aebischer, Matteo Fael, Christoph Greub, Javier Virto
+
+See also the Mathematica implementation in [DsixTools](https://dsixtools.github.io/) by Alejandro Celis, Javier Fuentes-Martín, Avelino Vicente and Javier Virto