Add detecting C++11 support
Checking in changes prior to tagging of version 0.13.

Changelog diff is:

diff --git a/Changes b/Changes
index 66c50ae..c873928 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,9 @@ Revision history for Perl extension Module-Build-XSHelper

 {{$NEXT}}

+0.13 2014-08-02T20:31:27Z
+    - Fixed C++11 support(Detecting compiler support)
+
 0.12 2014-08-02T13:57:10Z
     - Add C++11 support