docs(readme): modify according to standard structure

docs/README.rst

@@ -1,43 +1,89 @@
+.. _readme:
+
 mongodb
 =======
 
+|img_travis| |img_sr|
+
+.. |img_travis| image:: https://travis-ci.com/saltstack-formulas/mongodb-formula.svg?branch=master
+   :alt: Travis CI Build Status
+   :scale: 100%
+   :target: https://travis-ci.com/saltstack-formulas/mongodb-formula
+.. |img_sr| image:: https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg
+   :alt: Semantic Release
+   :scale: 100%
+   :target: https://github.com/semantic-release/semantic-release
+
 Install and configure MongoDB products on GNU/Linux and MacOS.
 
-Meta states
-================
+.. contents:: **Table of Contents**
+
+General notes
+-------------
+
+See the full `SaltStack Formulas installation and usage instructions
+<https://docs.saltstack.com/en/latest/topics/development/conventions/formulas.html>`_.
+
+If you are interested in writing or contributing to formulas, please pay attention to the `Writing Formula Section
+<https://docs.saltstack.com/en/latest/topics/development/conventions/formulas.html#writing-formulas>`_.
+
+If you want to use this formula, please pay attention to the ``FORMULA`` file and/or ``git tag``,
+which contains the currently released version. This formula is versioned according to `Semantic Versioning <http://semver.org/>`_.
+
+See `Formula Versioning Section <https://docs.saltstack.com/en/latest/topics/development/conventions/formulas.html#versioning>`_ for more details.
+
+If you need (non-default) configuration, please pay attention to the ``pillar.example`` file and/or `Special notes`_ section.
+
+Contributing to this repo
+-------------------------
+
+**Commit message formatting is significant!!**
+
+Please see `How to contribute <https://github.com/saltstack-formulas/.github/blob/master/CONTRIBUTING.rst>`_ for more details.
+
+Special notes
+-------------
+
+None
+
+Available states
+----------------
+
+.. contents::
+   :local:
 
 ``mongodb``
------------
+^^^^^^^^^^^
 
 Metastate to deploy MongoDB products from packages and/or archive files.  
 
 ``mongodb.server``
--------------------
+^^^^^^^^^^^^^^^^^^
 
 Deploy and configure MongoDB "Community Server" and start 'mongos' and 'mongod' services.
 
 ``mongodb.bic``
--------------------
+^^^^^^^^^^^^^^^
 
 Deploy and configure MongoDB "Connector for BI" and start 'mongosqld' service.
 
 ``mongodb.compass``
--------------------
+^^^^^^^^^^^^^^^^^^^
 
 Deploy Compass, the GUI for MongoDB
 
 ``mongodb.robo3t``
--------------------
+^^^^^^^^^^^^^^^^^^
 
 Deploy Robo 3T (formerly Robomongo), another GUI for MongoDB
 
 ``mongodb.clean``
------------
+^^^^^^^^^^^^^^^^^
 
 Metastate to uninstall MongoDB products
 
 Other states
-================
+------------
 
 ``mongodb.server.config``
 
@@ -53,35 +99,72 @@ Other states
 
 
 Pillar Data
-===============
-Use linux distribution repo::
+-----------
+Use Linux distribution repo::
 
        mongodb:
          server:
            version: '4.0'
 
-Use official  upstream repo::
+Use official upstream repo::
 
        mongodb:
          server:
-           use_repo: True
+           use_repo: true
            version: '4.0'
 
 Use official upstream archives::
 
        mongodb:
          server:
-           use_archive: True
+           use_archive: true
            version: '4.0.3'
          bic:
            version: 2.7.0
 
 Testing
-========
-This formula works "out-of-the-box", or with pillars, on these operating systems.
+-------
+
+Linux testing is done with ``kitchen-salt``.
+
+Requirements
+^^^^^^^^^^^^
+
+* Ruby
+* Docker
+
+.. code-block:: bash
+
+   $ gem install bundler
+   $ bundle install
+   $ bin/kitchen test [platform]
+
+Where ``[platform]`` is the platform name defined in ``kitchen.yml``,
+e.g. ``debian-9-2019-2-py3``.
+
+``bin/kitchen converge``
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+Creates the docker instance and runs the ``mongodb`` main state, ready for testing.
+
+``bin/kitchen verify``
+^^^^^^^^^^^^^^^^^^^^^^
+
+Runs the ``inspec`` tests on the actual instance.
+
+``bin/kitchen destroy``
+^^^^^^^^^^^^^^^^^^^^^^^
+
+Removes the docker instance.
+
+``bin/kitchen test``
+^^^^^^^^^^^^^^^^^^^^
+
+Runs all of the stages above in one go: i.e. ``destroy`` + ``converge`` + ``verify`` + ``destroy``.
+
+``bin/kitchen login``
+^^^^^^^^^^^^^^^^^^^^^
 
-- Ubuntu 16.04
-- Centos 7.5.1804 (firewall + selinux enforcing)
-- MacOS/Darwin
+Gives you SSH access to the instance for manual testing.
 
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