Checking in changes prior to tagging of version 0.02.

Changelog diff is:

diff --git a/Changes b/Changes
index 319a2d3..a8acbce 100644
--- a/Changes
+++ b/Changes
@@ -1,4 +1,7 @@
 Revision history for Perl extension EV::Hiredis

+0.02 2013-03-13T15:07:00+09:00
+     - update build req
+
 0.01 2013-01-09T18:57:18+09:00
      - initial version