Preparing for 2.2.0 release

Author: koic

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## master (unreleased)
 
+## 2.2.0 (2019-07-07)
+
 ### Bug fixes
 
 * [#67](https://github.com/rubocop-hq/rubocop-rails/issues/67): Fix an incorrect auto-correct for `Rails/TimeZone` when using `DateTime`. ([@koic][])

lib/rubocop/rails/version.rb

@@ -4,7 +4,7 @@ module RuboCop
   module Rails
     # This module holds the RuboCop Rails version information.
     module Version
-      STRING = '2.1.0'
+      STRING = '2.2.0'
     end
   end
 end