--- doc/conf.py.orig	Wed Dec 30 15:08:22 2015
+++ doc/conf.py	Wed Dec 30 15:08:30 2015
@@ -25,7 +25,7 @@ sys.path.insert(0, os.path.abspath('sphinxext'))
 
 # Add any Sphinx extension module names here, as strings. They can be extensions
 # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = ['sphinx.ext.autodoc', 'sphinx.ext.intersphinx',
+extensions = ['sphinx.ext.autodoc',
               'sphinx.ext.viewcode', 'github',  # for easy GitHub links
               ]