Add Codecov shield to README.rst
@@ -9,6 +9,10 @@ urllib3
:alt: Documentation Status
:target: https://urllib3.readthedocs.io/en/latest/
+.. image:: https://img.shields.io/codecov/c/github/shazow/urllib3.svg
+ :alt: Coverage Status
+ :target: https://codecov.io/gh/shazow/urllib3
+
.. image:: https://img.shields.io/pypi/v/urllib3.svg?maxAge=86400
:alt: PyPI version
:target: https://pypi.python.org/pypi/urllib3
