Prepare for 0.6.1 release

Change-Id: I962d75dd53d205d7e341d6f139e0aac3d08405ef
Refs: #4564
diff --git a/wscript b/wscript
index 5e8f5d5..4782454 100644
--- a/wscript
+++ b/wscript
@@ -1,6 +1,6 @@
 # -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
 
-VERSION = '0.6'
+VERSION = '0.6.1'
 APPNAME = 'ndn-tools'
 GIT_TAG_PREFIX = 'ndn-tools-'