📚 Updated CHANGELOG for release v2.2.0

Author: frenck

CHANGELOG.md

@@ -9,6 +9,17 @@ and this project adheres to [Semantic Versioning][semantic-versioning].
 
 No unreleased changes yet.
 
+## [v2.2.0] (2017-12-03)
+
+[Full Changelog][v2.1.2-v2.2.0]
+
+### Changed
+
+- Upgrades add-on base image to v1.2.0
+- Improves S6 service scripts
+- Updates add-on URLs to new community forum URL
+- Moves copy of rootfs at a later stage
+
 ## [v2.1.2] (2017-11-14)
 
 [Full Changelog][v2.1.1-v2.1.2]
@@ -149,4 +160,6 @@ No unreleased changes yet.
 [v2.1.0]: https://github.com/hassio-addons/addon-homebridge/tree/v2.1.0
 [v2.1.1-v2.1.2]: https://github.com/hassio-addons/addon-homebridge/compare/v2.1.1...v2.1.2
 [v2.1.1]: https://github.com/hassio-addons/addon-homebridge/tree/v2.1.1
+[v2.1.2-v2.2.0]: https://github.com/hassio-addons/addon-homebridge/compare/v2.1.2...v2.2.0
 [v2.1.2]: https://github.com/hassio-addons/addon-homebridge/tree/v2.1.2
+[v2.2.0]: https://github.com/hassio-addons/addon-homebridge/tree/v2.2.0