[Docs] Add documentation contribution docs

Now that we are in charge of managing our documentation I thought
we should have a section in the Contributor Guide on
how to contribute documentation.  This patch adds that.

It also resolves build WARNINGS due to the README files I added
not being included in any toctrees and adds the missing README
file to the install directory.

Change-Id: I8e12628b439a400ebd1ee6d691673a16e2c2f9d2

doc/source/admin/README.rst

@@ -1,6 +1,6 @@
-===================================
-Cinder Administration Documentation
-===================================
+==================================================
+Cinder Administration Documentation (source/admin)
+==================================================
 
 Introduction:
 -------------

doc/source/cli/README.rst

@@ -1,6 +1,6 @@
-==========================
-Cinder CLI Documentation
-==========================
+=====================================
+Cinder CLI Documentation (source/cli)
+=====================================
 
 Introduction:
 -------------

doc/source/configuration/README.rst

@@ -1,6 +1,6 @@
-==================================
-Cinder Configuration Documentation
-==================================
+=========================================================
+Cinder Configuration Documentation (source/configuration)
+=========================================================
 
 Introduction:
 -------------

doc/source/contributor/README.rst

@@ -1,6 +1,6 @@
-================================
-Cinder Contributor Documentation
-================================
+=====================================================
+Cinder Contributor Documentation (source/contributor)
+=====================================================
 
 Introduction:
 -------------

doc/source/contributor/documentation.rst

@@ -0,0 +1,128 @@
+..
+      Copyright 2010-2011 United States Government as represented by the
+      Administrator of the National Aeronautics and Space Administration.
+      All Rights Reserved.
+
+      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.
+
+Contributing Documentation to Cinder
+====================================
+
+Starting with the Pike release, Cinder's documentation has been moved from
+the openstack-manuals repository to the ``docs`` directory in the Cinder
+repository.  This makes it even more important that Cinder add and
+maintain good documentation.
+
+.. note::
+
+   Documentation for python-cinderclient and os-brick has undergone the
+   same transition.  The information here can be applied for those
+   projects as well.
+
+This page provides guidance on how to provide documentation for those
+who may not have previously been active writing documentation for
+OpenStack.
+
+Using RST
+---------
+
+OpenStack documentation uses reStructuredText to write documentation.
+The files end with a ``.rst`` extension.  The ``.rst`` files are then
+processed by Sphinx to build HTML based on the RST files.
+
+.. note::
+   Files that are to be included using the ``.. include::`` directive in an
+   RST file should use the ``.inc`` extension.  If you instead use the ``.rst``
+   this will result in the RST file being processed twice during the build and
+   cause Sphinx to generate a warning during the build.
+
+reStructuredText is a powerful language for generating web pages.  The
+documentation team has put together an `RST conventions`_ page with information
+and links related to RST.
+
+.. _RST conventions: https://docs.openstack.org/contributor-guide/rst-conv.html
+
+Building Cinder's Documentation
+-------------------------------
+
+To build documentation the following command should be used:
+
+.. code-block:: console
+
+   tox -e docs,pep8
+
+When building documentation it is important to also run pep8 as it is easy
+to introduce pep8 failures when adding documentation.  Currently, we do not
+have the build configured to treat warnings as errors, so it is also important
+to check the build output to ensure that no warnings are produced by Sphinx.
+
+.. note::
+
+   Many Sphinx warnings result in improperly formatted pages being generated.
+
+During the documentation build a number of things happen:
+
+   * All of the RST files under ``doc/source`` are processed and built.
+
+      * The openstackdocs theme is applied to all of the files so that they
+        will look consistent with all the other OpenStack documentation.
+      * The resulting HTML is put into ``doc/build/html``.
+
+   * Sample files like cinder.conf.sample are generated and put into ``doc/soure/_static``.
+   * All of Cinder's ``.py`` files are processed and the docstrings are used to
+     generate the files under ``doc/source/contributor/api``
+
+After the build completes the results may be accessed via a web browser in
+the ``doc/build/html`` directory structure.
+
+Review and Release Process
+--------------------------
+Documentation changes go through the same review process as all other changes.
+
+.. note::
+
+   Reviewers can see the resulting web page output by clicking on
+   ``gate-cinder-docs-ubuntu-xenial``!
+
+Once a patch is approved it is immediately released to the docs.openstack.org
+website and can be seen under Cinder's Documentation Page at
+https://docs.openstack.org/cinder/latest .  When a new release is cut a
+snapshot of that documentation will be kept at
+https://docs.openstack.org/cinder/<release> .  Changes from master can be
+backported to previous branches if necessary.
+
+
+Doc Directory Structure
+-----------------------
+The main location for Cinder's documentation is the ``doc/source`` directory.
+The top level index file that is seen at
+`https://docs.openstack/org/cinder/latest`_ resides here as well as the
+``conf.py`` file which is used to set a number of parameters for the build
+of OpenStack's documentation.
+
+Each of the directories under source are for specific kinds of documentation
+as is documented in the ``README`` in each directory:
+
+.. toctree::
+   :maxdepth: 1
+
+   ../admin/README
+   ../cli/README
+   ../configuration/README
+   ../contributor/README
+   ../install/README
+   ../reference/README
+   ../user/README
+
+.. _https://docs.openstack/org/cinder/latest: https://docs.openstack/org/cinder/latest
+

doc/source/contributor/index.rst

@@ -18,8 +18,9 @@
 Contributor Guide
 =================
 
-In this section you will find information on Cinder's lower level programming
-APIs.
+In this section you will find information on how to contribute to Cinder.
+Content includes architectural overviews, tips and tricks for setting up a
+development environment, and information on Cinder's lower level programming APIs,
 
 
 Programming HowTos and Tutorials
@@ -42,6 +43,13 @@ Programming HowTos and Tutorials
     rolling.upgrades
     groups
 
+Documentation Contribution
+--------------------------
+.. toctree::
+   :maxdepth: 2
+
+   documentation
+
 Background Concepts for Cinder
 ------------------------------
 .. toctree::

doc/source/install/README.rst

@@ -0,0 +1,15 @@
+==================================================
+Cinder Installation Documentation (source/install)
+==================================================
+
+Introduction:
+-------------
+
+This directory is intended to hold any installation documentation for Cinder.
+Documentation that explains how to bring Cinder up to the point that it is
+ready to use in an OpenStack or standalone environment should be put
+in this directory.
+
+The full spec for organization of documentation may be seen in the
+`OS Manuals Migration Spec
+<https://specs.openstack.org/openstack/docs-specs/specs/pike/os-manuals-migration.html>`.

doc/source/reference/README.rst

@@ -1,6 +1,6 @@
-==============================
-Cinder Reference Documentation
-==============================
+=================================================
+Cinder Reference Documentation (source/reference)
+=================================================
 
 Introduction:
 -------------

doc/source/user/README.rst

@@ -1,6 +1,6 @@
-==========================
-Cinder User Documentation
-==========================
+=======================================
+Cinder User Documentation (source/user)
+=======================================
 
 Introduction:
 -------------