Add index introduction

docs/index.rst

@@ -6,20 +6,33 @@ HBMQTT
 Built on top of :mod:`asyncio`, Python's standard asynchronous I/O framework, ``HBMQTT`` provides a straightforward API based on coroutines, making it easy to write
 highly concurrent applications.
 
-Contents:
+Requirements
+------------
 
-.. toctree::
-   :maxdepth: 2
+``HBMQTT`` is built on Python :mod:`asyncio` library which was introduced in Python 3.4. Tests shown that ``HBMQTT`` runs best on Python 3.4.3. Python 3.5.0 is also fully supported and recommended.
+
+Installation
+------------
+
+It is not recommended to install third-party library in Python system packages directory. The preferred way for installing ``HBMQTT`` is to create a virtual environment and then install all the dependencies you need. Refer `PEP 405`_ to learn more.
+
+Once you have a environment setup and ready, ``HBMQTT`` can be installed with the following command ::
+
+  (venv) $ pip install hbmqtt
+
+pip will download and install ``HBMQTT`` and all its dependencies.
 
 
+User guide
+----------
 
-Indices and tables
-==================
-
-* :ref:`genindex`
-* :ref:`modindex`
-* :ref:`search`
 
 
 .. _MQTT: http://www.mqtt.org
 .. _MQTT 3.1.1: http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html
+.. _PEP 405: https://www.python.org/dev/peps/pep-0405/
+
+.. toctree::
+   :maxdepth: 2
+   :hidden:
+