init persec with 0E0
Checking in changes prior to tagging of version 0.03.

Changelog diff is:

diff --git a/Changes b/Changes
index f9bc95b..f896bae 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,9 @@
 Revision history for Perl extension App::derived

+0.03    Tue Feb 12 23:32:27 2013
+        - initialize persec with 0E0.
+          IF there is no previous data to calculate rate, the server returns "0E0"
+
 0.02    Tue Feb 12 11:31:57 2013
         - requires '/bin/bash'