README: Add status bar stuff.

README.rst

@@ -1,4 +1,17 @@
+|Version| |Python| |Source| |Docs| |CI|
+
 This is a *kitchen sink* library of utility classes that simplifies writing
 richer tests.  I extracted the contents from various projects that I've
 written over the past few years -- this is the result of not wanting to cut
 and paste or rewrite the same code everywhere.
+
+.. |CI| image:: https://img.shields.io/circleci/project/github/dave-shawley/cavy/master.svg
+   :target: https://circleci.com/gh/dave-shawley/cavy
+.. |Docs| image:: https://img.shields.io/readthedocs/cavy.svg
+   :target: https://cavy.readthedocs.io/
+.. |Python| image:: https://img.shields.io/pypi/pyversions/cavy.svg
+   :target: https://pypi.org/project/cavy
+.. |Source| image:: https://img.shields.io/github/stars/dave-shawley/cavy.svg?logo=github
+   :target: https://github.com/dave-shawley/cavy
+.. |Version| image:: https://img.shields.io/pypi/v/cavy.svg
+   :target: https://pypi.org/project/cavy