Prepare for 0.6 release

Change-Id: Iac0e2ac841f48429b62fb48632f9920673450bf4
Refs: #4497
diff --git a/wscript b/wscript
index e4991b3..f02f7af 100644
--- a/wscript
+++ b/wscript
@@ -1,6 +1,6 @@
 # -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
 
-VERSION = '0.5'
+VERSION = '0.6'
 APPNAME = 'ndn-tools'
 GIT_TAG_PREFIX = 'ndn-tools-'