added signature check in case of alg is none
Merge pull request #2 from ritou/none_and_sig

added signature check in case of alg is none
Checking in changes prior to tagging of version 0.05.

Changelog diff is:

diff --git a/Changes b/Changes
index 47dc444..cfef320 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,8 @@
 Revision history for Perl extension JSON::WebToken

+0.05  Sun Feb 10 01:32:14 2013
+    - added signature check in case of alg is none (ritou++)
+
 0.04  Sat Jan 19 21:54:05 2013
     - added SEE ALSO