update README (#52)

README.md

@@ -1,13 +1,11 @@
-# Google App Engine services SDK for Python 3
+# Google App Engine bundled services SDK for Python 3
 
-This is a release of the App Engine services SDK for Python 3.  It provides access
-to various API endpoints that were previously only available on the Python 2.7
-runtime.
+This is a release of the App Engine services SDK for Python 3.  It provides access to various services and API endpoints that were previously only available on the Python 2.7 runtime.
 
-See the
-[documentation](https://cloud.google.com/appengine/docs/standard/python3/services/access) to learn more about using this SDK.
+See the [documentation](https://cloud.google.com/appengine/docs/standard/python3/services/access) to learn more about using this SDK, and learn more about it in [this product announcement](http://cloud.google.com/blog/products/serverless/support-for-app-engine-services-in-second-generation-runtimes) (Fall 2021).
+
+Additional examples (Datastore [NDB], Task Queues [push tasks], Memcache) can be found in the [App Engine migration repo](https://github.com/googlecodelabs/migrate-python2-appengine). (Specifically look for samples whose folders have a `b` but where the Python 2 equivalent folder does **not** have an `a`, meaning this SDK is required, e.g., Modules 1 [`mod1` and `mod1b`], 7, 12, etc.)
 
-We are working to support more App Engine bundled service APIs for Python 3. To sign up for the private preview, visit https://docs.google.com/forms/d/e/1FAIpQLSd1hFLA2UFSYwIMxm9ZI3pwigORZBgjJRH0qrnhtE7nvhhRCQ/viewform.
 
 ## Using the SDK
 
@@ -19,28 +17,29 @@ In your app's `app.yaml`, add the following:
 
 `app_engine_apis: true`
 
-In your `main.py`, import google.appengine.api.wrap_wsgi_app and call it on your
+In your `main.py`, import `google.appengine.api.wrap_wsgi_app()` and call it on your
 WSGI app object.
 
 Example for a standard WSGI app:
 
-~~~
-  import google.appengine.api
+    import google.appengine.api
+
+    def app(environ, start_response):
+        start_response('200 OK', [('Content-Type', 'text/plain')])
+        yield b'Hello world!\n'
 
-  app = google.appengine.api.wrap_wsgi_app(app)
-~~~
+    app = google.appengine.api.wrap_wsgi_app(app)
 
 Example for a Flask app:
 
-~~~
-  import google.appengine.api
-  from flask import Flask, request
+    import google.appengine.api
+    from flask import Flask, request
 
-  app = Flask(__name__)
-  app.wsgi_app = google.appengine.api.wrap_wsgi_app(app.wsgi_app)
-~~~
+    app = Flask(__name__)
+    app.wsgi_app = google.appengine.api.wrap_wsgi_app(app.wsgi_app)
 
 Then deploy your app as usual, with `gcloud beta app deploy` (currently only the Beta version has the capability to enable these APIs). The following modules are available:
+
 - `google.appengine.api.app_identity`
 - `google.appengine.api.background_thread`
 - `google.appengine.api.blobstore`
@@ -63,6 +62,7 @@ Then deploy your app as usual, with `gcloud beta app deploy` (currently only the
 - `google.appengine.ext.ndb`
 - `google.appengine.ext.testbed`
 
+
 ## Using the development version of the SDK
 
 To install the code from the `main` branch on GitHub rather than the latest