sniffReceived now allows router to inspect packets not destined for this node

src/mesh/Router.h

@@ -63,6 +63,12 @@ class Router
      * Note: this method will free the provided packet.
      */
     virtual void handleReceived(MeshPacket *p);
+
+    /**
+     * Every (non duplicate) packet this node receives will be passed through this method.  This allows subclasses to 
+     * update routing tables etc... based on what we overhear (even for messages not destined to our node)
+     */
+    virtual void sniffReceived(MeshPacket *p);
 };
 
 extern Router &router;