updates CHANGELOG.md for release 0.1.0

Author: kmindi

CHANGELOG.md

@@ -1,11 +1,19 @@
 # Changelog
+
 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).
 
 ## [Unreleased]
 
+## [0.1.0] - 2018-04-28
+
+### Added
+
+- added Changelog
+- added Asymmetric RSA String Encryption
+
 ## [X.Y.Z] - XXXX-XX-XX (TEMPLATE for new versions)
 
 ### Added