CHANGELOG.md in react_on_rails-6.4.0 vs CHANGELOG.md in react_on_rails-6.4.1

- old
+ new

@@ -6,9 +6,12 @@
 ## [Unreleased]
 *Please add entries here for your pull requests.*
 
 ## [6.4.0] - 2017-1-12
 
+### Possible Breaking Change
+- Since foreman is no longer a dependency of the React on Rails gem, please run `gem install foreman`. If you are using rvm, you may wish to run `rvm @global do gem install foreman` to install foreman for all your gemsets. 
+
 ### Fixed
 - Removed foreman as a dependency. [#678](https://github.com/shakacode/react_on_rails/pull/678) by [x2es](https://github.com/x2es).
 
 ### Added
 - Automatically generate __i18n__ javascript files for `react-intl` when the serve starts up. [#642](https://github.com/shakacode/react_on_rails/pull/642) by [JasonYCHuang](https://github.com/JasonYCHuang).