Fixed header level in main index file
.. include:: ../README.rst
+------------
User's Guide
-============
+------------
.. toctree::
:maxdepth: 1
@@ -14,11 +15,12 @@ User's Guide
Command line tool index <users_guide/command_line_tools>
HDF5 file schema <users_guide/hdf5>
+------------
Tutorials
-=========
+------------
Introductory
-------------
+#############
.. toctree::
:maxdepth: 1
@@ -32,7 +34,7 @@ Introductory
NAMD <tutorials/namd>
Advanced
---------
+#############
.. toctree::
:maxdepth: 1
@@ -40,8 +42,9 @@ Advanced
OpenMM <tutorials/openmm>
Weighted ensemble-based string method <http://stringmethodexamples.readthedocs.org/>
+------------
Development
-===========
+------------
.. toctree::
:maxdepth: 1
