docs: Update configuration docs

This commit updates configuration docs. It also refactors the
index doc page to make it look more like Tempest's. The "readme"
file was removed from the docs as it's just a high-level project
overview.

The Developer's Guide section will be updated with contents included
in the "readme" in far greater detail in a follow-up commit.

Change-Id: I4d468b7f1bb6a000fde42d656635159176d5ef7f
diff --git a/doc/source/index.rst b/doc/source/index.rst
index 35e8439..f58ee7f 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -1,24 +1,30 @@
-.. patrole documentation master file, created by
-   sphinx-quickstart on Tue Jul  9 22:26:36 2013.
-   You can adapt this file completely to your liking, but it should at least
-   contain the root `toctree` directive.
+========================================
+Patrole: Tempest Plugin for RBAC Testing
+========================================
 
-Patrole - an OpenStack Tempest Plugin for RBAC Testing
-========================================================
+User's Guide
+============
 
-Contents:
+Patrole Configuration Guide
+---------------------------
 
 .. toctree::
    :maxdepth: 2
 
-   readme
    installation
+   configuration
    usage
+   sampleconf
+
+Developer's Guide
+=================
+
+.. toctree::
+   :maxdepth: 2
+
    contributing
 
 Indices and tables
 ==================
 
-* :ref:`genindex`
-* :ref:`modindex`
 * :ref:`search`