added intro text to doc index

--HG--
branch : trunk
diff --git a/docs/conf.py b/docs/conf.py
index 91e1ca4..3bd30e1 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -124,7 +124,7 @@
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title, author, document class [howto/manual]).
 latex_documents = [
-  ('index', 'Jinja2.tex', 'Jinja2 Documentation', 'Armin Ronacher', 'manual'),
+  ('index', 'Jinja2.tex', 'Jinja2 Documentation', 'Armin Ronacher', 'manual', 'toctree_only'),
 ]
 
 # Additional stuff for the LaTeX preamble.