Updated changelog with signal.

docs/changelog.txt

@@ -45,6 +45,8 @@ HEAD
 
 - Uses the current context when rendering the render templates.
 
+- Added :func:`post_compress<compressor.signals.post_compress>` signal.
+
 .. _`Slim It`: http://slimit.org/
 .. _`django-appconf`: http://django-appconf.rtfd.org/
 .. _`versiontools`: http://pypi.python.org/pypi/versiontools

docs/usage.txt

@@ -148,8 +148,7 @@ for the number of seconds defined in the
 Signals
 -------
 
-.. attribute:: compressor.signals.post_compress
-   :module:
+.. function:: compressor.signals.post_compress(sender, type, mode, context)
 
 Django Compressor includes a ``post_compress`` signal that enables you to
 listen for changes to your compressed CSS/JS.  This is useful, for example, if