  addopts=--tb=short
  
  [tox]
  envlist =
         py27-{flake8,docs},
         {py26,py27}-django14,
         {py26,py27,py32,py33,py34}-django{15,16},
         {py27,py32,py33,py34}-django{17,18,master}
  
  [testenv]
 
</s> remove commands = ./runtests.py --lintonly
 </s> add  </s> remove commands = mkdocs build
 </s> add 
       py27-{lint,docs},
  addopts=--tb=short
  
  [tox]
  envlist =
       py27-{lint,docs},
         {py26,py27}-django14,
         {py26,py27,py32,py33,py34}-django{15,16},
         {py27,py32,py33,py34}-django{17,18,master}
  
  [testenv]
keep keep keep keep replace keep keep keep keep keep
 Setup isort for code style linting 
tox.ini