docs: Add usage, development index page

Signed-off-by: Stephen Finucane <stephen@that.guru>

doc/contents.rst

@@ -1,4 +1,3 @@
-
 .. _contents:
 
 Sphinx documentation contents
@@ -9,24 +8,14 @@ Sphinx documentation contents
 
    intro
 
-   usage/installation
+   usage/index
-   usage/quickstart
+   development/index
-   usage/restructuredtext/index
-   usage/markdown
-   usage/configuration
-   usage/builders/index
-   usage/extensions/index
-   usage/theming
-   usage/advanced/intl
-   usage/advanced/setuptools
-   usage/advanced/websupport/index
-
    man/index
+
    theming
    templating
    latex
    extdev/index
-   development/tutorials/index
 
    faq
    glossary

doc/development/index.rst

@@ -0,0 +1,13 @@
+================
+Extending Sphinx
+================
+
+This guide is aimed at those wishing to develop their own extensions for
+Sphinx. Sphinx possesses significant extensibility capabilities including the
+ability to hook into almost every point of the build process.  If you simply
+wish to use Sphinx with existing extensions, refer to :doc:`/usage/index`.
+
+.. toctree::
+   :maxdepth: 2
+
+   tutorials/index

doc/usage/index.rst

@@ -0,0 +1,23 @@
+============
+Using Sphinx
+============
+
+This guide serves to demonstrate how one can get started with Sphinx and covers
+everything from installing Sphinx and configuring your first Sphinx project to
+using some of the advanced features Sphinx provides out-of-the-box. If you are
+looking for guidance on extending Sphinx, refer to :doc:`/development/index`.
+
+.. toctree::
+   :maxdepth: 2
+
+   quickstart
+   installation
+   restructuredtext/index
+   markdown
+   configuration
+   builders/index
+   extensions/index
+   theming
+   advanced/intl
+   advanced/setuptools
+   advanced/websupport/index