Replace include of readme on index with actual content

If we want the Readme to have more links, this breaks linking at the
index page in the built documentation. The version is hardcoded in links
in the readme version, and hardcoded links point to the wrong version in
the documentaiton

Author: agjohnson

docs/index.rst

@@ -1,8 +1,57 @@
-.. include:: ../README.rst
+Read the Docs Sphinx Theme
+==========================
+
+This Sphinx_ theme was designed to provide a great reader experience for
+documentation users on both desktop and mobile devices. This theme is commonly
+used with projects on `Read the Docs`_ but can work with any Sphinx project.
+
+.. _Sphinx: http://www.sphinx-doc.org
+.. _Read the Docs: http://www.readthedocs.org
+
+Using this theme
+----------------
+
+:doc:`installing`
+    How to install this theme on your Sphinx project.
+
+:doc:`configuring`
+    Theme configuration and customization options.
+
+:ref:`supported-browsers`
+    Supported browser/operating system combinations.
+
+:ref:`supported-dependencies`
+    Supported project dependencies, like Python and Sphinx.
+
+Development
+-----------
+
+:doc:`contributing`
+    How to contribute changes to the theme.
+
+:doc:`Development guidelines <development>`
+    Guidelines the theme developers use for developing and testing changes.
+
+`Read the Docs contributor guide`_
+    Our contribution guidelines extend to all projects maintained by Read the
+    Docs core team.
+
+:doc:`changelog`
+    The theme development changelog.
+
+:doc:`Demo documentation <demo/structure>`
+    The theme's styleguide test environment, where new changes are tested.
+
+
+.. _Read the Docs contributor guide: https://docs.readthedocs.io/en/stable/contribute.html
+
+
+.. Hidden TOCs
 
 .. toctree::
    :caption: Theme Documentation
    :maxdepth: 2
+   :hidden:
 
    installing
    configuring
@@ -19,6 +68,7 @@
     :maxdepth: 2
     :numbered:
     :caption: Demo Documentation
+    :hidden:
 
     demo/structure
     demo/demo
@@ -29,5 +79,6 @@
     :maxdepth: 3
     :numbered:
     :caption: This is an incredibly long caption for a long menu
+    :hidden:
 
     demo/long