Add github badge. [skip ci]

README.rst

@@ -1,7 +1,7 @@
 pathlib2
 ========
 
-|appveyor| |codecov|
+|github| |appveyor| |codecov|
 
 Fork of pathlib aiming to support the full stdlib Python API.
 
@@ -54,6 +54,10 @@ Therefore, on Windows with Python 2.7, until this problem is fixed upstream,
 unfortunately you cannot rely on pathlib2 to support the full unicode range for filenames.
 See `issue #56 <https://github.com/mcmtroffaes/pathlib2/issues/56>`_ for more details.
 
+.. |github| image:: https://github.com/mcmtroffaes/pathlib2/actions/workflows/python-package.yml/badge.svg
+   :target: https://github.com/mcmtroffaes/pathlib2/actions/workflows/python-package.yml
+   :alt: github
+
 .. |appveyor| image:: https://ci.appveyor.com/api/projects/status/baddx3rpet2wyi2c?svg=true
     :target: https://ci.appveyor.com/project/mcmtroffaes/pathlib2
     :alt: appveyor