diff -p -up ./doc/conf.py.orig ./doc/conf.py
--- ./doc/conf.py.orig	2012-12-25 14:26:38.576425574 +0100
+++ ./doc/conf.py	2012-12-25 14:27:07.430483005 +0100
@@ -16,7 +16,7 @@ import sys, os
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
-#sys.path.insert(0, os.path.abspath('.'))
+sys.path.insert(0, os.path.abspath('..'))
 
 # -- General configuration -----------------------------------------------------