communication: add SVS support

Change-Id: I74c5a091c8b1c05dd186a0c10849aa5bb4f39e50
Signed-off-by: Varun Patil <varunpatil@ucla.edu>
diff --git a/nlsr.conf b/nlsr.conf
index bfed00b..7c59dee 100644
--- a/nlsr.conf
+++ b/nlsr.conf
@@ -19,7 +19,7 @@
   ; InterestLifetime (in seconds) for LSA fetching
   lsa-interest-lifetime 4    ; default value 4. Valid values 1-60
 
-  ; select sync protocol: chronosync or psync
+  ; select sync protocol: chronosync / psync / svs
   sync-protocol psync
 
   ; sync interest lifetime of ChronoSync/PSync in milliseconds