Use readme to ensure the long description renders on PyPI
diff --git a/tox.ini b/tox.ini
index 4e1304d..dc8811a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -21,6 +21,7 @@
 deps =
     doc8
     pyenchant
+    readme>=0.5.1
     sphinx
     sphinx_rtd_theme
     sphinxcontrib-spelling
@@ -31,6 +32,7 @@
     sphinx-build -W -b doctest -d {envtmpdir}/doctrees docs docs/_build/html
     sphinx-build -W -b spelling docs docs/_build/html
     doc8 --allow-long-titles README.rst CHANGELOG.rst docs/ --ignore-path docs/_build/
+    python setup.py check --restructuredtext --strict
 
 [testenv:docs-linkcheck]
 deps =