Checking in changes prior to tagging of version 0.12.

Changelog diff is:

diff --git a/Changes b/Changes
index c752640..ebab9a8 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,8 @@ Revision history for Perl extension App-revealup

 {{$NEXT}}

+0.12 2014-09-03T20:55:45Z
+
     - write description about attributes in Markdown
     - add tcp server tests