Merge pull request #404 from hynek/master

Rename readme dep and sprinkle in skip_installs
diff --git a/tox.ini b/tox.ini
index 3970462..73f6018 100644
--- a/tox.ini
+++ b/tox.ini
@@ -35,18 +35,21 @@
 [testenv:flake8]
 deps =
      flake8
+skip_install = true
 commands =
      flake8 src tests setup.py
 
 [testenv:pypi-readme]
 deps =
-    readme
+    readme_renderer
+skip_install = true
 commands =
     python setup.py check -r -s
 
 [testenv:check-manifest]
 deps =
     check-manifest
+skip_install = true
 commands =
     check-manifest