Few words about flake8

Author: florentx

docs/intro.rst

@@ -348,7 +348,10 @@ Note: most errors can be listed with such one-liner::
 Related tools
 -------------
 
-Some tools which use ``pep8`` are referenced in the Wiki: `list of related tools
+The `flake8 checker <https://flake8.readthedocs.org>`_ is a wrapper around
+``pep8`` and similar tools. It supports plugins.
+
+Other tools which use ``pep8`` are referenced in the Wiki: `list of related tools
 <https://github.com/jcrocholl/pep8/wiki/RelatedTools>`_.
 
 .. _PEP 8: http://www.python.org/dev/peps/pep-0008/