Add change log file

CHANGELOG.md

@@ -0,0 +1,31 @@
+# Change Log
+All notable changes to this project will be documented in this file.
+
+## [Unreleased]
+
+## [1.0.1] - 2016-09-24
+### Added
+- CHANGELOG.md
+- Throw Exception if plugins path not exist
+- Moved config, messages, plugins and system folders to src folder
+
+## [1.0.0] - 2016-03-25
+- Release of Version 1.0.0
+
+---
+
+`Added` for new features.  
+`Changed` for changes in existing functionality.  
+`Deprecated` for once-stable features removed in upcoming releases.  
+`Removed` for deprecated features removed in this release.  
+`Fixed` for any bug fixes.  
+`Security` to invite users to upgrade in case of vulnerabilities.
+
+---
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/) 
+and this project adheres to [Semantic Versioning](http://semver.org/).
+
+[Unreleased]: https://github.com/getherbie/herbie/compare/v1.0.1...HEAD
+[1.0.1]: https://github.com/getherbie/herbie/compare/v1.0.0...v1.0.1
+[1.0.0]: https://github.com/getherbie/herbie/compare/v0.5.0...v1.0.0