Update README.md

README.md

@@ -1,8 +1,9 @@
 [![Tests][badge-tests]][link-tests]
 [![Documentation][badge-docs]][link-docs]
+[![PyPI](https://img.shields.io/pypi/v/treedata.svg)](https://pypi.org/project/treedata)
 
 [badge-tests]: https://img.shields.io/github/actions/workflow/status/colganwi/treedata/test.yaml?branch=main
-[link-tests]: https://github.com/YosefLab/treedata/actions/workflows/test.yml
+[link-tests]: https://github.com/YosefLab/treedata/actions/workflows/test.yaml
 [badge-docs]: https://img.shields.io/readthedocs/treedata
 
 <img