Added CHANGELOG for #79

Author: weierophinney

CHANGELOG.md

@@ -8,6 +8,8 @@ All notable changes to this project will be documented in this file, in reverse
 
 - [#67](https://github.com/zendframework/zend-validator/pull/67) adds support
   for Punycoded top-level domains in the `Hostname` validator.
+- [#79](https://github.com/zendframework/zend-validator/pull/79) adds and
+  publishes the documentation to https://zendframework.github.io/zend-validator/
 
 ### Deprecated