Fix actions checkout version (#30)

* Upgrade checkout version to fix problem publishing to pypi

* Attempt to fix errors by copying code from jwst repo

* Copied code section from jwst publish workflow

* More changes to try and get publish to pypy to run

README.md

@@ -0,0 +1,22 @@
+# COSTools
+
+[![Build status](https://dev.azure.com/spacetelescope/costools/_apis/build/status/spacetelescope.costools?branchName=master)](https://dev.azure.com/spacetelescope/costools/_build/latest?definitionId=5&branchName=master)
+[![Codecov](https://codecov.io/gh/spacetelescope/costools/branch/master/graph/badge.svg)](https://codecov.io/gh/spacetelescope/costools)
+[![ReadtheDocs](https://readthedocs.org/projects/costools/badge/?version=latest)(http://costools.readthedocs.io/en/latest/)
+[![Powered by Astropy](http://img.shields.io/badge/powered%20by-AstroPy-orange.svg?style=flat)(http://www.astropy.org)
+
+## About
+
+COSTools provides utility functions for analyzing and doing custom reductions
+for hst/cos datasets.
+
+You can read the full specification at [the online documentation](http://costools.readthedocs.io/).
+
+## Contributing
+
+Please open a new [issue](https://github.com/spacetelescope/costools/issues)
+or new [pull request](https://github.com/spacetelescope/costools/pulls)
+for bugs, feedback, or new features you would like to see.
+
+If there is an issue you would like to work on, please leave a comment and
+we will be happy to assist. New contributions and contributors are very welcome!

setup.py

@@ -45,6 +45,8 @@
     author='Warren Hack, Nadezhda Dencheva, Phil Hodge',
     author_email='help@stsci.edu',
     description='Tools for COS (Cosmic Origins Spectrograph)',
+    long_description='README.md',
+    long_description_content_type='text/x-rst',
     url='https://github.com/spacetelescope/costools',
     license='BSD',
     classifiers=[