Copy content of readme to docs

Because their content is going to diverge anyway

README.rst

@@ -12,13 +12,9 @@ It aims to be for CalDAV and CardDAV what `OfflineIMAP
 <http://offlineimap.org/>`_ is for IMAP.
 
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     :target: https://travis-ci.org/untitaker/vdirsyncer
 
 .. image:: https://coveralls.io/repos/untitaker/vdirsyncer/badge.png?branch=master
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     :target: https://coveralls.io/r/untitaker/vdirsyncer?branch=master
 
 How to use

docs/index.rst

@@ -1,4 +1,29 @@
-.. include:: ../README.rst
+==========
+vdirsyncer
+==========
+
+vdirsyncer synchronizes your calendars and addressbooks between two storages.
+The supported storages are CalDAV, CardDAV, arbitrary HTTP resources, `vdir
+<https://github.com/untitaker/vdir>`_ and some more. The documentation contains
+a full `list of supported storages <storages>`.
+
+It aims to be for CalDAV and CardDAV what `OfflineIMAP
+<http://offlineimap.org/>`_ is for IMAP.
+
+How to use
+==========
+
+vdirsyncer requires Python >= 2.7 or Python >= 3.3.
+
+As all Python packages, vdirsyncer can be installed with ``pip``::
+
+    pip install --user vdirsyncer
+
+Then copy ``example.cfg`` to ``~/.vdirsyncer/config`` and edit it. You can use the
+`VDIRSYNCER_CONFIG` environment variable to change the path vdirsyncer will
+read the config from.
+
+Run ``vdirsyncer --help`` and read on:
 
 Table of Contents
 =================