making all the badges work

README.md

@@ -4,11 +4,11 @@
 
 Orbit-fitting for directly imaged objects. For installation instructions, tutorials, and detailed documentation, start [here](http://orbitize.readthedocs.io/en/latest/).
 
-[![Build Status](https://travis-ci.com/sblunt/orbitize.svg?branch=main)](https://travis-ci.com/sblunt/orbitize)
-[![Coverage Status](https://coveralls.io/repos/github/sblunt/orbitize/badge.svg?branch=master&service=github)](https://coveralls.io/github/sblunt/orbitize?branch=master&service=github)
+[![Build Status](https://app.travis-ci.com/sblunt/orbitize.svg?branch=main)](https://app.travis-ci.com/sblunt/orbitize)
+[![Coverage Status](https://coveralls.io/repos/github/sblunt/orbitize/badge.svg?branch=main)](https://coveralls.io/github/sblunt/orbitize?branch=main)
 [![Documentation Status](https://readthedocs.org/projects/orbitize/badge/?version=latest)](http://orbitize.readthedocs.io/en/latest/?badge=latest)
 [![PyPI version](https://badge.fury.io/py/orbitize.svg)](https://badge.fury.io/py/orbitize)
 [![PyPI downloads](https://img.shields.io/pypi/dm/orbitize.svg)](https://pypistats.org/packages/orbitize)
 
-[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.3337378.svg)](https://zenodo.org/record/3337378#.XUHT3ZNKjUJ)
+[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.4017034.svg)](https://doi.org/10.5281/zenodo.4017034)
 [![License](https://img.shields.io/badge/License-BSD%203--Clause-blue.svg)](https://opensource.org/licenses/BSD-3-Clause)