Fixed #5284 -- Documented never_cache decorator. Thanks, xbito

git-svn-id: http://code.djangoproject.com/svn/django/trunk@6308 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/cache.txt

@@ -524,6 +524,15 @@ the value of the ``CACHE_MIDDLEWARE_SETTINGS`` setting. If you use a custom
 ``max_age`` in a ``cache_control`` decorator, the decorator will take
 precedence, and the header values will be merged correctly.)
 
+If you want to use headers to disable caching altogether, 
+``django.views.decorators.never_cache`` is a view decorator that adds
+headers to ensure the response won't be cached by browsers or other caches. Example::
+
+    from django.views.decorators.cache import never_cache
+    @never_cache
+    def myview(request):
+        ...
+
 .. _`Cache-Control spec`: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9
 
 Other optimizations