updated docs

docs/index.md

@@ -12,7 +12,7 @@ features:
         <li>Push and in-app pull notifications</li>
         <li>Email and SMS push notification channels</li>
         <li>Unicast and broadcast message types</li>
-        <li>Subscriber specifiable filter rules</li>
+        <li>Broadcast push notification filter rules specifiable by both sender and subscriber</li>
         <li>Notification auto-gen from RSS</li>
       </ul>
   - title: Non-intrusive