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+django-shorturls
+================
+
+A custom URL shortening app for Django, including easy ``rev=canonical``
+support.
+
+Most code was originally by Simon Willison; see
+http://simonwillison.net/2009/Apr/11/revcanonical/ for details. Improved
+slightly and packaged by Jacob Kaplan-Moss.
+
+Patches welcome: http://github.com/jacobian/django-shorturls
+
+Usage
+-----
+
+So, you want to host your own short URLs on your Django site:
+
+1. In your settings, define a set of prefixes for short URLs:
+
+        SHORTEN_MODELS = {
+            'A': 'myapp.animal',
+            'V': 'myapp.vegetable',
+            'M': 'myapp.mineral'
+        }
+
+   The keys are string prefixes; they can be any string, actually,
+   but since we're going for short a single character is probably good.
+   
+   Values are the (hopefully-familiar) ``"<app-name>.<model-class>"`` used
+   by Django to identify a model. Remember: ``app-name`` is the
+   (case-sensitive) last bit of your app's name in ``INSTALLED_APPS``, and
+   ``<model-class>`` is your model class's name, lowercased.
+   
+   Make sure your models have a ``get_absolute_url()`` method defined.
+    
+2. Wire up the redirect view by adding to your URLconf:
+
+        ('^short/', include('shorturls.urls'))
+        
+3. If you'd like to quickly link to shortened URLs in your templates, stick
+   ``"shorturls"`` in ``INSTALLED_APPS``, and then in your templates do:
+   
+        {% load shorturl %}
+        <a href="{% shorturl object %}">...</a>
+        
+   (where ``object`` is a model instance).
+  
+   Alternatively::
+  
+        {% load shorturl %}
+        {% revcanonical object %}
+        
+   This generates the whole ``<link rev="canonical" href="...">`` tag for
+   you.
+            
+That's it.
+
+If you'd like more control, keep reading.
+
+Settings
+--------
+
+Available settings are:
+
+#### ``SHORTEN_MODELS``
+
+You've seen this one.
+    
+#### ``SHORT_BASE_URL``
+
+If defined, the ``shorturl`` and ``revcanonical`` template tags will
+prefix generated URLs with this value. Use this if you've got a shorter
+domain name you'd like to use for small URLs.
+
+For example, given ``SHORT_BASE_URL = 'http://exm.pl/'``, ``{% shorturl
+obj %}`` would return something like ``http://exm.pl/AbCd``.
+
+#### ``SHORTEN_FULL_BASE_URL``
+
+The domain to redirect to when redirecting away from the small URL.
+Again, you'll use this if your short URL base and your "real" site
+differ.
+
+If not defined, the redirect view will try to guess the proper domain by
+consulting the ``django.contrib.sites`` framework, if installed, or the
+requested domain, if not.