This section of the docs could be read as pointing out the project as a
bad example. It was not intended this way, but I would like to avoid
anyone interpreting it this way. As a result, we'll continue to use
their configuration section as an example but not name names.
Closes#228
Python 2.7's ConfigParser module does not allow for the behaviour we
have documented for config files in Flake8 3.0. To compensate for that,
we add a dependency on the configparser backport on PyPI for Python 2.7
