Updated CHANGELOG file

Author: olegkoval

CHANGELOG.md

@@ -4,6 +4,10 @@ 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/).
 
+## [1.1.1] - 2018-09-10
+### Changed
+- fix composer file format issue
+
 ## [1.1.0] - 2018-09-09
 ### Added
 - added feature to add a Pro features through a "Layer" class