Update CHANGELOG.md

Author: scott-xu

CHANGELOG.md

@@ -4,10 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## [3.3.0] - 2017-09-29
+## [3.3.0] - 2017-10-05
 
 ### Added
 - Support .NET Standard 2.0
+- Added decorator support [#33](https://github.com/ninject/Ninject.Extensions.Factory/pull/33)
 
 ### Removed
 - .NET 3.5, .NET 4.0 and Silverlight