add JOSS badge (#169)

README.md

@@ -5,9 +5,11 @@
 [![Repo status](https://www.repostatus.org/badges/latest/active.svg?style=flat-square)](https://www.repostatus.org/#active)
 [![conda forge](https://img.shields.io/conda/vn/conda-forge/regional-mom6.svg)](https://anaconda.org/conda-forge/regional-mom6)
 [![pypi](https://badge.fury.io/py/regional-mom6.svg)](https://badge.fury.io/py/regional-mom6)
+[![status](https://joss.theoj.org/papers/d396435c09aae4c2f4b62cdbc1493c1e/status.svg)](https://joss.theoj.org/papers/d396435c09aae4c2f4b62cdbc1493c1e)
+[![Documentation Status](https://readthedocs.org/projects/regional-mom6/badge/?version=latest)](https://regional-mom6.readthedocs.io/en/latest/?badge=latest)
+
 [![License](https://img.shields.io/badge/License-MIT-blue.svg?style=flat-square)](https://mit-license.org)
 [![codecov](https://codecov.io/gh/COSIMA/regional-mom6/branch/main/graph/badge.svg?token=7OEZ1UZRY4)](https://codecov.io/gh/COSIMA/regional-mom6)
-[![Documentation Status](https://readthedocs.org/projects/regional-mom6/badge/?version=latest)](https://regional-mom6.readthedocs.io/en/latest/?badge=latest)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 
 Users just need to provide some information about where, when, and how big their domain is and also where raw input forcing files are. The package sorts out all the boring details and creates a set of MOM6-friendly input files along with setup directories ready to go!