Checking in changes prior to tagging of version 0.02.

Changelog diff is:

diff --git a/Changes b/Changes
index 02682e0..4e304cf 100644
--- a/Changes
+++ b/Changes
@@ -1,4 +1,7 @@
 Revision history for Perl extension JSON::WebToken

+0.02  Sat Jan 19 21:40:56 2013
+    - first release
+
 0.01  Tue Jun 26 22:28:08 2012
     - original version