Checking in changes prior to tagging of version 0.1.7.

Changelog diff is:

diff --git a/History.md b/History.md
index ec2c6b5..8606d29 100644
--- a/History.md
+++ b/History.md
@@ -1,22 +1,27 @@
+0.1.7 / 2013-02-21
+==================
+
+  * Chage test runner to Mocha.
+
 0.1.6 / 2013-02-13
 ==================

-    * Fixed: Build problem in node v0.9.9
+  * Fixed: Build problem in node v0.9.9

 0.1.5 / 2013-02-06
 ==================

-    *  Update document
+  * Update document

 0.1.4 / 2013-01-18
 ==================

-    * Change internal interface for support node v0.9.4 and subsequent versions.
+  * Change internal interface for support node v0.9.4 and subsequent versions.

 0.1.3 / 2012-11-21
 ==================

-    * Fixed: Typo in binding.gyp
+  * Fixed: Typo in binding.gyp

 0.1.2 / 2012-11-06
 ==================