Checking in changes prior to tagging of version 0.02.

Changelog diff is:

diff --git a/Changes b/Changes
index f534213..64c3a65 100644
--- a/Changes
+++ b/Changes
@@ -2,5 +2,9 @@ Revision history for Perl extension Plack::Middleware::GitStatus

 {{$NEXT}}

+0.02 2013-07-21T18:24:56Z
+
+        - filesystem cache of git message
+
 0.01    Wed Feb 13 05:18:49 2013
         - original version