Remove oauth2client from docs (#738)

* Use google-auth and google-auth-oauthlib in oauth2 docs.

* Remove basic server sample

Author: busunkim96

docs/README.md

@@ -7,8 +7,7 @@ access to many Google APIs.
 ## Features
 
 - Call Google APIs simply
-- Use the library with Google App Engine
-- Handle Auath with fewer lines of code
+- Handle Auth with fewer lines of code
 - Use standard tooling for installation
 
 ## Documentation
@@ -32,8 +31,6 @@ Learn how to use the Google API Python Client with these guides:
   - [Use Pagination](pagination.md)
   - [Improve Performance](performance.md)
   - [Understand Thread Safety](thread_safety.md)
-  - [Use Google App Engine](google_app_engine.md)
-  - [Use Django](django.md)
 
 ### Reference Documentation
 

docs/api-keys.md

@@ -2,7 +2,7 @@
 
 When calling APIs that do not access private user data, you can use simple API keys. These keys are used to authenticate your application for accounting purposes. The Google Developers Console documentation also describes [API keys](https://developers.google.com/console/help/using-keys).
 
-> Note: If you do need to access private user data, you must use OAuth 2.0. See [Using OAuth 2.0 for Web Server Applications](oauth-web.md) and [Using OAuth 2.0 for Server to Server Applications](oauth-server.md) for more information.
+> Note: If you do need to access private user data, you must use OAuth 2.0. See [Using OAuth 2.0 for Installed Applications](oauth-installed.md), [Using OAuth 2.0 for Server to Server Applications](oauth-server.md), and [Using OAuth 2.0 for Web Server Applications](oauth-web.md) for more information.
 
 ## Using API Keys
 

docs/client-secrets.md

@@ -2,6 +2,8 @@
 
 The Google APIs Client Library for Python uses the `client_secrets.json` file format for storing the `client_id`, `client_secret`, and other OAuth 2.0 parameters.
 
+See [Creating authorization credentials](https://developers.google.com/identity/protocols/OAuth2WebServer#creatingcred) for how to obtain a `client_secrets.json` file.
+
 The `client_secrets.json` file format is a [JSON](http://www.json.org/) formatted file containing the client ID, client secret, and other OAuth 2.0 parameters. Here is an example client_secrets.json file for a web application:
 
 ```json
@@ -53,7 +55,7 @@ The following examples show how use a `client_secrets.json` file to create a `Fl
 
 ### Installed App
 
-```py
+```python
 from google_auth_oauthlib.flow import InstalledAppFlow
 ...
 flow = InstalledAppFlow.from_client_secrets_file(
@@ -63,7 +65,7 @@ flow = InstalledAppFlow.from_client_secrets_file(
 
 ### Web Server App
 
-```py
+```python
 import google.oauth2.credentials
 import google_auth_oauthlib.flow
 

docs/django.md

@@ -14,9 +14,9 @@ You can enable logging of key events in this library by configuring Python's sta
 
 In the following code, the logging level is set to `INFO`, and the Google Translate API is called:
 
-```py
+```python
 import logging
-from apiclient.discovery import build
+from googleapiclient.discovery import build
 
 logger = logging.getLogger()
 logger.setLevel(logging.INFO)
@@ -45,7 +45,7 @@ INFO:root:URL being requested: https://www.googleapis.com/language/translate/v2?
 
 For even more detailed logging you can set the debug level of the [httplib2](https://github.com/httplib2/httplib2) module used by this library. The following code snippet enables logging of all HTTP request and response headers and bodies:
 
-```py
+```python
 import httplib2
 httplib2.debuglevel = 4
 ```