Update CHANGELOG.md

@marinofaggiana Please merge to master

CHANGELOG.md

@@ -6,6 +6,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### [2.22.0] - 2018-xx-xx
+- See https://github.com/nextcloud/ios/milestone/37
+
+## [2.22.1] - 2018-08-21
+- See https://github.com/nextcloud/ios/milestone/36
+
 ## [2.22.0] - 2018-08-20
 - See https://github.com/nextcloud/ios/milestone/32