Add CHANGELOG

Author: FelipeGdM

Diff for: CHANGELOG

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+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## 1.0.1 - 2021-02-11
+### Removed
+- Remove unused gtest files. The CMakeLists.txt and test file were not remove, given that they may be used in the future.
+
+## 1.0.0 - 2021-02-11
+### Added
+- README.md with simple installation instructions
+
+### Changed
+- Replace node-gyp with cmake-js as building tool, taking advantage existing files and Gazebo building system, thus simplifying the project structure
+
+## 0.1.0 - 2021-02-11
+### Added
+- Create project from gzweb commit [d6c8fbf](https://github.com/osrf/gzweb/commit/d6c8fbf73f51cf23f9be44bab4fdb46badb1abc8)
+- Publish npm package