completed the install doc

--HG--
extra : convert_revision : svn%3Ab85faa78-f9eb-468e-a121-7cced6da292c%40512

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

@@ -1,6 +1,5 @@
 .. _install:
 
-=====================
 How to install Scrapy
 =====================
 
@@ -43,4 +42,40 @@ Or in Arch Linux do:
 Install Scrapy code
 ===================
 
+We're working hard to get the first release of Scrapy out. In the meantime, please download the latest development version from the Subversion_ repository.
 
+To do this, follow this steps:
+
+1. Check out Scrapy code (you will need to have Subversion_ installed):
+   
+   .. code-block:: bash
+
+      svn co http://svn.scrapy.org/scrapy/trunk/ scrapy-trunk
+
+2. Add Scrapy to your Python path. You can do this by making a symbolic link to your system ``site-packages`` directory like this:  
+
+   .. code-block:: bash
+
+      ln -s `pwd`/scrapy-trunk/scrapy SITE-PACKAGES/scrapy
+
+   Where ``SITE-PACKAGES`` is the location of your system ``site-packages`` directory, to find this out execute the following:
+
+   .. code-block:: bash
+
+      python -c "from distutils.sysconfig import get_python_lib; print get_python_lib()"
+
+
+   Or by adding the ``scrapy-trunk`` directory to your ``PYTHONPATH`` environment variable, like this:
+
+   .. code-block:: bash
+
+      export PYTHONPATH=`pwd`/scrapy-trunk:PYTHONPATH
+
+
+3. Make the ``scrapy-trunk/scrapy/bin/scrapy-admin.py`` script executable system-wide. To do this create a symbolic link to the file in a directory on your sistem path, like:
+   
+   .. code-block:: bash
+
+       ln -s `pwd`/scrapy-trunk/scrapy/bin/scrapy-admin.py /usr/local/bin
+
+.. _Subversion: http://subversion.tigris.org/