Add basic README

appengine/standard/endpoints-frameworks-v2/backend/README.md

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+## Endpoints Frameworks v2 Python Sample
+
+This demonstrates how to use Google Cloud Endpoints Frameworks v2 on Google App Engine Standard Environment using Python.
+
+This sample consists of two parts:
+
+1. The backend
+2. The clients
+
+## Running Locally
+
+For more info on running Standard applications locally, see [the getting started documentation](https://cloud.google.com/appengine/docs/python/quickstart).
+
+Create a `lib` directory in which to install the Endpoints Frameworks v2 library. For more info, see [Installing a library](https://cloud.google.com/appengine/docs/python/tools/using-libraries-python-27#installing_a_library).
+
+Install the Endpoints Frameworks v2 library:
+
+    $ mkdir lib
+    $ pip install -t lib google-endpoints
+
+Run the application:
+
+    $ dev_appserver.py app.yaml
+
+In your web browser, go to the following address: http://localhost:8080/\_ah/api/explorer
+
+## Deploying to Google App Engine
+
+Generate a swagger file by running: `endpointscfg.py get_swagger_spec main.EchoApi --hostname your-service.appspot.com`
+
+To set up OAuth2, replace `your-oauth-client-id.com` under the `x-security` section in `echo-v1_swagger.json` with your OAuth2 client ID. If you want to use Google OAuth2 Playground, use `407408718192.apps.googleusercontent.com` as your audience. To generate a JWT, go to the following address: `https://developers.google.com/oauthplayground`.
+
+Deploy the generated swagger spec to Google Cloud Service Management: `gcloud alpha service-management deploy echo-v1_swagger.json`
+
+Open the `app.yaml` file and in the `env_variables` section, replace `your-service.appspot.com` with your service name, and `2016-08-01r0` with your uploaded service management configuration.
+
+Then, deploy the sample using `gcloud`:
+
+    $ gcloud beta app deploy
+
+Once deployed, you can access the application at https://your-service.appspot.com