From a59330cf2c17065b2d590f8e340b85cd72a514ab Mon Sep 17 00:00:00 2001
From: Matthew Tretter <m@tthewwithanm.com>
Date: Fri, 12 Oct 2012 23:12:05 -0400
Subject: [PATCH] Add class description

---
 imagekit/specs/sources.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/imagekit/specs/sources.py b/imagekit/specs/sources.py
index 82b118b..807ee2a 100644
--- a/imagekit/specs/sources.py
+++ b/imagekit/specs/sources.py
@@ -17,6 +17,12 @@ def ik_model_receiver(fn):
 
 
 class ModelSignalRouter(object):
+    """
+    Handles signals dispatched by models and relays them to the spec sources
+    that represent those models.
+
+    """
+
     def __init__(self):
         self._sources = []
         uid = 'ik_spec_field_receivers'