Added README.rst to celery_http_gateway example.

examples/celery_http_gateway/README.rst

@@ -0,0 +1,39 @@
+==============================
+ Example Celery->HTTP Gateway
+==============================
+
+This is an example service exposing the ability to apply tasks and query
+statuses/results over HTTP.
+
+Some familiarity with Django is recommended.
+
+``settings.py`` contains the celery settings, you probably want to configure
+at least the broker related settings.
+
+To run the service you have to run the following commands::
+
+    $ python manage.py syncdb # (if running the database backend)
+
+    $ python manage.py runserver
+
+
+The service is now running at http://localhost:8000
+
+
+You can apply tasks, with the ``/apply/<task_name>`` URL::
+
+    $ curl http://localhost:8000/apply/celery.ping/
+    {"ok": "true", "task_id": "e3a95109-afcd-4e54-a341-16c18fddf64b"}
+
+Then you can use the resulting task-id to get the return value::
+
+    $ curl http://localhost:8000/e3a95109-afcd-4e54-a341-16c18fddf64b/status/
+    {"task": {"status": "SUCCESS", "result": "pong", "id": "e3a95109-afcd-4e54-a341-16c18fddf64b"}}
+
+
+If you don't want to expose all tasks, you can extend the apply view to only
+accept an whitelist for example, or just make views for every task you want to
+expose, we made on such view for ping in ``views.ping``::
+
+    $ curl http://localhost:8000/ping/
+    {"ok": "true", "task_id": "383c902c-ba07-436b-b0f3-ea09cc22107c"}