Checking in changes prior to tagging version "0.2.3".

Changelog diff:

diff --git a/History.md b/History.md
index d42d1bb..9ed667a 100755
--- a/History.md
+++ b/History.md
@@ -1,5 +1,10 @@
 # Revision history for shipitjs

+0.2.3 / 2013-05-27
+==================
+
+  * Add configuration for customize the messages generated in the Tag and Commit steps.
+
 0.2.2 / 2013-05-24
 ==================