Fixed the command-line tools usage

Change-Id: Ibf96ff95f4876836b6b259d28f7012ce170557cf
diff --git a/wscript b/wscript
index 18d8b78..2d5a474 100644
--- a/wscript
+++ b/wscript
@@ -1,5 +1,5 @@
 # -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
-VERSION='0.2.4'
+VERSION='0.2.5'
 APPNAME='ndn-control-center'
 APPCAST='https://named-data.net/binaries/NDN-Control-Center/ndn-control-center.xml'