Checking in changes prior to tagging of version 0.18.

Changelog diff is:

diff --git a/Changes b/Changes
index d636d06..1b55a2f 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,10 @@ Revision history for Perl extension Plack::Middleware::ServerStatus::Lite

 {{$NEXT}}

+0.18 2013-07-22T06:39:12Z
+
+       - add more tests. check response body
+
 0.17 2013-07-22T06:25:23Z

        - requires Parallel::Scoreboard >= 0.03