updated license: removed vows, added mocha

Author: marcelduran

NOTICE

@@ -12,9 +12,9 @@ Licensed under the GPL License version 2.
 Copyright (c) 2011 TJ Holowaychuk <tj@vision-media.ca>.
 Licensed under the MIT License.
 
------------------- vows (https://github.com/cloudhead/vows) --------------------
+-------------- mocha (http://visionmedia.github.com/mocha/) --------------------
 
-Copyright (c) 2009 cloudhead.
+Copyright (c) 2011-2013 TJ Holowaychuk <tj@vision-media.ca>.
 Licensed under the MIT License.
 
 ------------------- nock (https://github.com/flatiron/nock) --------------------