update readme (badge)

Author: maxibor

README.md

@@ -1,4 +1,5 @@
-[![Build Status](https://travis-ci.com/maxibor/sourcepredict.svg?token=pwT9AgYi4qJY4LTp9WUy&branch=master)](https://travis-ci.com/maxibor/sourcepredict) [![Coverage Status](https://coveralls.io/repos/github/maxibor/sourcepredict/badge.svg?branch=master)](https://coveralls.io/github/maxibor/sourcepredict?branch=master) [![Anaconda-Server Badge](https://anaconda.org/maxibor/sourcepredict/badges/installer/conda.svg)](https://conda.anaconda.org/maxibor) [![Documentation Status](https://readthedocs.org/projects/sourcepredict/badge/?version=latest)](https://sourcepredict.readthedocs.io/en/latest/?badge=latest) [![DOI](https://zenodo.org/badge/161636346.svg)](https://zenodo.org/badge/latestdoi/161636346) [![DOI](https://joss.theoj.org/papers/10.21105/joss.01540/status.svg)](https://doi.org/10.21105/joss.01540)
+[![Build Status](https://travis-ci.com/maxibor/sourcepredict.svg?token=pwT9AgYi4qJY4LTp9WUy&branch=master)](https://travis-ci.com/maxibor/sourcepredict) [![Coverage Status](https://coveralls.io/repos/github/maxibor/sourcepredict/badge.svg?branch=master)](https://coveralls.io/github/maxibor/sourcepredict?branch=master) [![Anaconda-Server Badge](https://anaconda.org/maxibor/sourcepredict/badges/installer/conda.svg)](https://conda.anaconda.org/maxibor) [![Documentation Status](https://readthedocs.org/projects/sourcepredict/badge/?version=latest)](https://sourcepredict.readthedocs.io/en/latest/?badge=latest) [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.10.5281/zenodo.3379603.svg)](https://doi.org/10.5281/zenodo.10.5281/zenodo.3379603)
+ [![DOI](https://joss.theoj.org/papers/10.21105/joss.01540/status.svg)](https://doi.org/10.21105/joss.01540)
 
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