Add initial sphinx configuration

This is essentially the output of 'sphinx-quickstart' but with the
following changes:

- Parts of the generated Makefile are merged into the existing
  Documentation/automake.mk Makefile
- A license is added to the index.rst file
- The OVS logo is added
- A 'contents' page is added, so we don't need to include a TOC on the
  home page
- The theme is switched to 'bizstyle', which makes better use of
  horizontal real estate than the default 'alabaster' theme

Copyright is assigned to "The Open vSwitch Development Community".

Signed-off-by: Stephen Finucane <stephen@that.guru>
Signed-off-by: Ben Pfaff <blp@ovn.org>

1 files changed, 31 insertions, 0 deletions

diff --git a/Documentation/contents.rst b/Documentation/contents.rst
new file mode 100644
index 000000000..3ecb7412f
--- /dev/null
+++ b/Documentation/contents.rst
@@ -0,0 +1,31 @@
+..
+      Licensed under the Apache License, Version 2.0 (the "License"); you may
+      not use this file except in compliance with the License. You may obtain
+      a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+      Unless required by applicable law or agreed to in writing, software
+      distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+      WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+      License for the specific language governing permissions and limitations
+      under the License.
+
+      Convention for heading levels in Open vSwitch documentation:
+
+      =======  Heading 0 (reserved for the title in a document)
+      -------  Heading 1
+      ~~~~~~~  Heading 2
+      +++++++  Heading 3
+      '''''''  Heading 4
+
+      Avoid deeper levels because they do not render well.
+
+===================================
+Open vSwitch Documentation Contents
+===================================
+
+.. toctree::
+   :maxdepth: 3
+
+   index