Merge pull request #248 from andyreagan/patch-1

Update installation.rst

docs/installation.rst

@@ -97,7 +97,7 @@ The following applications should be listed - NB! it's important to
 maintain the order due to database relational constraints:
 
 ::
-
+        'django.contrib.sites', # django 1.6.2
         'django.contrib.humanize',
         'south',
         'django_notify',