Update CHANGELOG.md

Author: witcher112

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
-## [Unreleased]
+## [3.3.0]
 ### Added
 - getdiskspaceosx a native library for determining the amount of free space available on Mac OSX.
 - Status descriptions for updating app patcher state