Link badge to PyPI rather than static image
And DRY the link
.. image:: https://img.shields.io/pypi/v/skeleton.svg
- :target: https://pypi.org/project/skeleton
+ :target: `PyPI link`_
.. image:: https://img.shields.io/pypi/pyversions/skeleton.svg
+ :target: `PyPI link`_
+
+.. _PyPI link: https://pypi.org/project/skeleton
.. image:: https://dev.azure.com/jaraco/skeleton/_apis/build/status/jaraco.skeleton?branchName=master
:target: https://dev.azure.com/jaraco/skeleton/_build/latest?definitionId=1&branchName=master
