Re-generate all readmes

Author: Jon Wayne Parrott

samples/snippets/api/README.rst

@@ -26,7 +26,7 @@ authentication:
 
     .. code-block:: bash
 
-        gcloud beta auth application-default login
+        gcloud auth application-default login
 
 
 #. When running on App Engine or Compute Engine, credentials are already

samples/snippets/cloud-client/v1/README.rst

@@ -26,7 +26,7 @@ authentication:
 
     .. code-block:: bash
 
-        gcloud beta auth application-default login
+        gcloud auth application-default login
 
 
 #. When running on App Engine or Compute Engine, credentials are already

samples/snippets/cloud-client/v1beta2/README.rst

@@ -26,7 +26,7 @@ authentication:
 
     .. code-block:: bash
 
-        gcloud beta auth application-default login
+        gcloud auth application-default login
 
 
 #. When running on App Engine or Compute Engine, credentials are already

samples/snippets/tutorial/README.rst

@@ -0,0 +1,97 @@
+.. This file is automatically generated. Do not edit this file directly.
+
+Google Cloud Natural Language Tutorial Python Samples
+===============================================================================
+
+This directory contains samples for Google Cloud Natural Language Tutorial. The `Google Cloud Natural Language API`_ provides natural language understanding technologies to developers, including sentiment analysis, entity recognition, and syntax analysis. This API is part of the larger Cloud Machine Learning API.
+
+
+
+
+.. _Google Cloud Natural Language Tutorial: https://cloud.google.com/natural-language/docs/ 
+
+Setup
+-------------------------------------------------------------------------------
+
+
+Authentication
+++++++++++++++
+
+Authentication is typically done through `Application Default Credentials`_,
+which means you do not have to change the code to authenticate as long as
+your environment has credentials. You have a few options for setting up
+authentication:
+
+#. When running locally, use the `Google Cloud SDK`_
+
+    .. code-block:: bash
+
+        gcloud auth application-default login
+
+
+#. When running on App Engine or Compute Engine, credentials are already
+   set-up. However, you may need to configure your Compute Engine instance
+   with `additional scopes`_.
+
+#. You can create a `Service Account key file`_. This file can be used to
+   authenticate to Google Cloud Platform services from any environment. To use
+   the file, set the ``GOOGLE_APPLICATION_CREDENTIALS`` environment variable to
+   the path to the key file, for example:
+
+    .. code-block:: bash
+
+        export GOOGLE_APPLICATION_CREDENTIALS=/path/to/service_account.json
+
+.. _Application Default Credentials: https://cloud.google.com/docs/authentication#getting_credentials_for_server-centric_flow
+.. _additional scopes: https://cloud.google.com/compute/docs/authentication#using
+.. _Service Account key file: https://developers.google.com/identity/protocols/OAuth2ServiceAccount#creatinganaccount
+
+Install Dependencies
+++++++++++++++++++++
+
+#. Install `pip`_ and `virtualenv`_ if you do not already have them.
+
+#. Create a virtualenv. Samples are compatible with Python 2.7 and 3.4+.
+
+    .. code-block:: bash
+
+        $ virtualenv env
+        $ source env/bin/activate
+
+#. Install the dependencies needed to run the samples.
+
+    .. code-block:: bash
+
+        $ pip install -r requirements.txt
+
+.. _pip: https://pip.pypa.io/
+.. _virtualenv: https://virtualenv.pypa.io/
+
+Samples
+-------------------------------------------------------------------------------
+
+Language tutorial
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+
+
+To run this sample:
+
+.. code-block:: bash
+
+    $ python tutorial.py
+
+    usage: tutorial.py [-h] movie_review_filename
+    
+    positional arguments:
+      movie_review_filename
+                            The filename of the movie review you'd like to
+                            analyze.
+    
+    optional arguments:
+      -h, --help            show this help message and exit
+
+
+
+
+.. _Google Cloud SDK: https://cloud.google.com/sdk/