src: Added missing startNotification for face monitoring

Change-Id: Ib2aa3126c040a491353c175b77de5110dbd8414d
diff --git a/src/nlsr.cpp b/src/nlsr.cpp
index 703b494..9e8ae6d 100644
--- a/src/nlsr.cpp
+++ b/src/nlsr.cpp
@@ -117,6 +117,8 @@
   m_syncLogicHandler.createSyncSocket(boost::ref(*this));
   registerKeyPrefix();
   m_helloProtocol.scheduleInterest(10);
+
+  m_faceMonitor.startNotification();
 }
 
 void