Make the role of tox, in test running, clearer
Make the role of tox, in test running, clearer

pypa/pip,sbidoul/pip,xavfernandez/pip,xavfernandez/pip,pypa/pip,pradyunsg/pip,pradyunsg/pip,rouge8/pip,sbidoul/pip,rouge8/pip,pfmoore/pip,xavfernandez/pip,pfmoore/pip,rouge8/pip