Improved docs/install.txt to say you don't have to run 'setup.py install' if…

Improved docs/install.txt to say you don't have to run 'setup.py install' if you're using SVN. Thanks, dp_wiz

git-svn-id: http://code.djangoproject.com/svn/django/trunk@173 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/install.txt

@@ -74,6 +74,8 @@ Installing the development version
 
    (In the above line, change ``python2.3`` to match your current Python version.)
 
+You don't have to run ``python setup.py install``.
+
 When you want to update your code, just run the command ``svn update`` from
 within the ``django_src`` directory.