supress warnings with "# pyflakes: noqa", "# noqa", or "# flake8: noqa"

I wanted functionality like flake8 so that a line could be ignored:

https://pypi.python.org/pypi/flake8

> from foo import * # noqa: leave me alone pyflakes!  :)

This also addresses:

https://pypi.python.org/pypi/flake8