testenv: it's not just for pep8 anymore!

tox.ini

 [tox]
-envlist = py26,py27,pypy,py32,py33,docs,pep8
+envlist = py26,py27,pypy,py32,py33,docs,meta
 
 [testenv]
 deps =
@@ -19,9 +19,11 @@ commands =
     sphinx-build -W -b doctest -d {envtmpdir}/doctrees docs docs/_build/html
     sphinx-build -W -b linkcheck docs docs/_build/html
 
-[testenv:pep8]
-deps = flake8
-commands = flake8 .
+[testenv:meta]
+deps =
+    flake8
+commands =
+    flake8 .
 
 [flake8]
 select = E,W,F