Adding CHANGELOG entries.

Some CHANGELOG beautification.

CHANGELOG.md

@@ -1,18 +1,34 @@
 # Change Log
 
+All notable changes to this project will be documented in this file.
+This project adheres to [Semantic Versioning](http://semver.org/).
+
 ## Unreleased
 
-### Changes
+### Added
+
+* Added a matrix build of 2.1, 2.2, and 2.3 to Travis
+
+### Changed
 
 * Added a [Code of Conduct](CODE_OF_CONDUCT.md)
+* Bumped the bundler-audit version to 0.5
+* Bumped the RSpec version for development to 3.5
+* Bumped the Rake version for development to 11.2
+* Bumped the RuboCop version for development to 0.42
+* Bumped the Ruby version for development to 2.3.1
 
-## 1.0.1 (2016-02-03)
+## [1.0.1] - 2016-02-03
 
-### Bugs Fixed
+### Fixed
 
 * [#1](https://github.com/civisanalytics/ruby_audit/pull/1)
   removing unreliable last-update check
 
 ## 1.0.0 (2016-02-03)
 
 * Initial Release
+
+[Unreleased]: https://github.com/civisanalytics/ruby_audit/compare/v1.1.0...HEAD
+[1.0.1]: https://github.com/civisanalytics/ruby_audit/compare/v1.0.0...v1.0.1
+[1.0.0]: https://github.com/civisanalytics/ruby_audit/commit/7535b70412641c888c80d99514b27ba254fb8316