KMS: harmonize / DRY 'README.rst' / 'docs/index.rst'. (#6021)

Toward #5912.

kms/README.rst

@@ -1,6 +1,8 @@
 Python Client for Cloud Key Management Service (KMS) API (`Alpha`_)
 ===================================================================
 
+|pypi| |versions|
+
 `Cloud Key Management Service (KMS) API`_: Manages keys and performs cryptographic operations in a central cloud
 service, for direct use by other cloud resources and applications.
 
@@ -11,6 +13,10 @@ service, for direct use by other cloud resources and applications.
 .. _Cloud Key Management Service (KMS) API: https://cloud.google.com/kms
 .. _Client Library Documentation: https://googlecloudplatform.github.io/google-cloud-python/latest/kms/index.html
 .. _Product Documentation:  https://cloud.google.com/kms
+.. |pypi| image:: https://img.shields.io/pypi/v/google-cloud-datastore.svg
+   :target: https://pypi.org/project/google-cloud-datastore/
+.. |versions| image:: https://img.shields.io/pypi/pyversions/google-cloud-datastore.svg
+   :target: https://pypi.org/project/google-cloud-datastore/
 
 Quick Start
 -----------

kms/docs/changelog.md

@@ -0,0 +1 @@
+../CHANGELOG.md

kms/docs/index.rst

@@ -1,84 +1,21 @@
-Python Client for Cloud Key Management Service (KMS) API (`Alpha`_)
-===================================================================
+.. include:: /../kms/README.rst
 
-`Cloud Key Management Service (KMS) API`_: Manages keys and performs cryptographic operations in a central cloud
-service, for direct use by other cloud resources and applications.
 
-- `Client Library Documentation`_
-- `Product Documentation`_
-
-.. _Alpha: https://github.com/GoogleCloudPlatform/google-cloud-python/blob/master/README.rst
-.. _Cloud Key Management Service (KMS) API: https://cloud.google.com/kms
-.. _Client Library Documentation: https://googlecloudplatform.github.io/google-cloud-python/latest/kms/index.html
-.. _Product Documentation:  https://cloud.google.com/kms
-
-Quick Start
------------
-
-In order to use this library, you first need to go through the following steps:
-
-1. `Select or create a Cloud Platform project.`_
-2. `Enable billing for your project.`_
-3. `Enable the Cloud Key Management Service (KMS) API.`_
-4. `Setup Authentication.`_
-
-.. _Select or create a Cloud Platform project.: https://console.cloud.google.com/project
-.. _Enable billing for your project.: https://cloud.google.com/billing/docs/how-to/modify-project#enable_billing_for_a_project
-.. _Enable the Cloud Key Management Service (KMS) API.:  https://cloud.google.com/kms
-.. _Setup Authentication.: https://googlecloudplatform.github.io/google-cloud-python/latest/core/auth.html
-
-Installation
-~~~~~~~~~~~~
-
-Install this library in a `virtualenv`_ using pip. `virtualenv`_ is a tool to
-create isolated Python environments. The basic problem it addresses is one of
-dependencies and versions, and indirectly permissions.
-
-With `virtualenv`_, it's possible to install this library without needing system
-install permissions, and without clashing with the installed system
-dependencies.
-
-.. _`virtualenv`: https://virtualenv.pypa.io/en/latest/
-
-
-Mac/Linux
-^^^^^^^^^
-
-.. code-block:: console
-
-    pip install virtualenv
-    virtualenv <your-env>
-    source <your-env>/bin/activate
-    <your-env>/bin/pip install google-cloud-kms
-
-
-Windows
-^^^^^^^
-
-.. code-block:: console
+API Reference
+-------------
+.. toctree::
+   :maxdepth: 2
 
-    pip install virtualenv
-    virtualenv <your-env>
-    <your-env>\Scripts\activate
-    <your-env>\Scripts\pip.exe install google-cloud-kms
+   gapic/v1/api
+   gapic/v1/types
 
-Next Steps
-~~~~~~~~~~
 
--  Read the `Client Library Documentation`_ for Cloud Key Management Service (KMS) API
-   API to see other available methods on the client.
--  Read the `Cloud Key Management Service (KMS) API Product documentation`_ to learn
-   more about the product and see How-to Guides.
--  View this `repository’s main README`_ to see the full list of Cloud
-   APIs that we cover.
+Changelog
+---------
 
-.. _Cloud Key Management Service (KMS) API Product documentation:  https://cloud.google.com/kms
-.. _repository’s main README: https://github.com/GoogleCloudPlatform/google-cloud-python/blob/master/README.rst
+For a list of all ``google-cloud-kms`` releases:
 
-Api Reference
--------------
 .. toctree::
-    :maxdepth: 2
+   :maxdepth: 2
 
-    gapic/v1/api
-    gapic/v1/types
+   changelog