CONTRIBUTING.md in createsend-3.2.0 vs CONTRIBUTING.md in createsend-3.3.0

@@ -1,8 +1,8 @@
 # Guidelines for contributing
 
 1. [Fork the repository](https://help.github.com/articles/fork-a-repo).
 2. [Create a topic branch](http://learn.github.com/p/branching.html).
 3. Make your changes, including tests for your changes which maintain [coverage](https://coveralls.io/r/campaignmonitor/createsend-ruby).
-4. Ensure that all tests pass, by running `bundle exec rake`. The [Travis CI build](https://travis-ci.org/campaignmonitor/createsend-ruby) runs on Ruby `2.0.0`, `1.9.3`, `1.9.2`, `1.8.7`, and `ree`.
+4. Ensure that all tests pass, by running `bundle exec rake`. The [Travis CI build](https://travis-ci.org/campaignmonitor/createsend-ruby) runs on Ruby `2.0.0`, `1.9.3`, `1.9.2`, `jruby-18mode`, `jruby-19mode`, `rbx-18mode`, `rbx-19mode`, `ruby-head`, `jruby-head`, `1.8.7`, and `ree`.
 5. It should go without saying, but do not increment the version number in your commits.
 6. [Submit a pull request](https://help.github.com/articles/using-pull-requests).