Added a CHANGELOG

CHANGELOG.md

+# Change Log
+All notable changes to this project will be documented in this file.
+This project adheres to [Semantic Versioning](http://semver.org/).
+
+## [Unreleased]
+### Fixed
+- Remove unnecessary Android permissions
+
+## [0.1.0] - 2016-05-15
+### Added
+- Initial public beta release
+
+[Unreleased]: https://github.com/pazaan/Medtronic640gUploader/compare/v0.1.0...HEAD