Add README

examples/miniapps/monitoring-daemon-asyncio/README.rst

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+Asyncio Daemon Dependency Injection Example
+===========================================
+
+Application ``monitoringdaemon`` is an `asyncio <https://docs.python.org/3/library/asyncio.html>`_
++ `Dependency Injector <http://python-dependency-injector.ets-labs.org/>`_ application.
+
+Run
+---
+
+Build the Docker image:
+
+.. code-block:: bash
+
+   docker-compose build
+
+Run the docker-compose environment:
+
+.. code-block:: bash
+
+    docker-compose up
+
+The output should be something like:
+
+.. code-block::
+
+   Starting monitoring-daemon-asyncio_monitor_1 ... done
+   Attaching to monitoring-daemon-asyncio_monitor_1
+   monitor_1  | [2020-08-06 01:57:08,249] [INFO] [monitoringdaemon.dispatcher]: Dispatcher is starting up
+   monitor_1  | [2020-08-06 01:57:08,249] [INFO] [monitoringdaemon.dispatcher]: Monitoring task has been started monitoringdaemon.monitors.HttpMonitor(url="http://example.com")
+   monitor_1  | [2020-08-06 01:57:08,249] [INFO] [monitoringdaemon.dispatcher]: Monitoring task has been started monitoringdaemon.monitors.HttpMonitor(url="http://httpbin.org/get")
+   monitor_1  | [2020-08-06 01:57:08,318] [INFO] [monitoringdaemon.monitors.HttpMonitor(url="http://example.com")]: Response code: 200, content length: 648, request took: 0.067 seconds
+   monitor_1  | [2020-08-06 01:57:08,363] [INFO] [monitoringdaemon.monitors.HttpMonitor(url="http://httpbin.org/get")]: Response code: 200, content length: 309, request took: 0.112 seconds
+
+Test
+----
+
+This application comes with the unit tests.
+
+To run the tests do:
+
+.. code-block:: bash
+
+   docker-compose run --rm monitor py.test monitoringdaemon/tests.py --cov=monitoringdaemon
+
+The output should be something like:
+
+.. code-block::
+
+   platform linux -- Python 3.8.3, pytest-6.0.1, py-1.9.0, pluggy-0.13.1
+   rootdir: /code
+   plugins: asyncio-0.14.0, cov-2.10.0
+   collected 2 items
+
+   monitoringdaemon/tests.py ..                                     [100%]
+
+   ----------- coverage: platform linux, python 3.8.3-final-0 -----------
+   Name                             Stmts   Miss  Cover
+   ----------------------------------------------------
+   monitoringdaemon/__init__.py         0      0   100%
+   monitoringdaemon/__main__.py         9      9     0%
+   monitoringdaemon/containers.py      11      0   100%
+   monitoringdaemon/dispatcher.py      45      5    89%
+   monitoringdaemon/http.py             6      3    50%
+   monitoringdaemon/monitors.py        29      2    93%
+   monitoringdaemon/tests.py           37      0   100%
+   ----------------------------------------------------
+   TOTAL                              137     19    86%