Update README.md

Author: HugoNjb

README.md

@@ -79,7 +79,8 @@ The dependencies are already included in the Functions folder and loaded automat
 *University of Fribourg, Switzerland*
 
 ## Cite the repository
-H. Najberg, C.A. Wicht, autoERP, (2020), GitHub repository https://github.com/HugoNjb/autoERP
+H. Najberg, C.A. Wicht, autoERP, (2020), GitHub repository https://github.com/HugoNjb/autoERP \
+[![DOI](https://zenodo.org/badge/223942151.svg)](https://zenodo.org/badge/latestdoi/223942151)
 
 ## License
 <a rel="license" href="http://creativecommons.org/licenses/by-nc/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-nc/4.0/88x31.png" /></a><br />This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-nc/4.0/">Creative Commons Attribution-NonCommercial 4.0 International License</a>.