reworking docs structure

--HG--
extra : convert_revision : svn%3Ab85faa78-f9eb-468e-a121-7cced6da292c%40507

sites/scrapy.org/docs/sources/index.rst

@@ -8,9 +8,8 @@ Scrapy's documentation
 Contents:
 
 .. toctree::
+   :maxdepth: 2
 
-   basics
-   scrapy_intro
-   tutorial/index
+   intro/index
    tutorial2/index
    reference/index

sites/scrapy.org/docs/sources/intro/index.rst

@@ -0,0 +1,8 @@
+Introduction
+============
+
+.. toctree::
+   :maxdepth: 1
+
+   overview
+   install

sites/scrapy.org/docs/sources/intro/install.rst

@@ -0,0 +1,46 @@
+.. _install:
+
+=====================
+How to install Scrapy
+=====================
+
+Requirements
+============
+
+* `Python <http://www.python.org>`_ 2.5 or above
+* `Twisted <http://twistedmatrix.com>`_
+* `libxml2 <http://xmlsoft.org>`_
+* `pyopenssl <http://pyopenssl.sourceforge.net>`_
+
+Optional:
+
+* `spidermonkey <http://www.mozilla.org/js/spidermonkey/>`_
+* `simplejson <http://code.google.com/p/simplejson/>`_
+
+Install Python
+==============
+
+Scrapy works with Python 2.5 or above, you can get it at http://www.python.org.
+
+Install required libraries
+==========================
+
+The procedure for installing the required third party libraries (twisted, libxml2 and pyopenssl) depends on the platform and OS you use.
+
+If you're running Ubuntu/Debian Linux do:
+
+.. code-block:: bash
+
+   apt-get install python-twisted python-libxml2 python-pyopenssl
+
+Or in Arch Linux do:
+
+.. code-block:: bash
+
+   pacman -S twisted python-lxml pyopenssl
+
+
+Install Scrapy code
+===================
+
+