clean up rest server and related demo scripts
diff --git a/start-rest.sh b/start-rest.sh
index 910eb41..94bbd46 100755
--- a/start-rest.sh
+++ b/start-rest.sh
@@ -57,6 +57,10 @@
 function start {
     lotate $REST_LOG 10 
     cd $WEBDIR
+    # Make log dir for iperf log files
+    if [ ! -d  log ]; then
+      mkdir log
+    fi
     $restscript > $REST_LOG 2>&1 &
 }