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Good pull requests — patches, improvements, new features — are a fantastic help.  They should remain focused in scope and avoid containing unrelated commits.

Please review the Pull Requests section of our Contributing Guidelines before submitting your work: https://github.com/jjj/chosen/blob/master/contributing.md#pull-requests
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### Summary

Provide a general description of the code changes in your pull request.

Please double-check that:

  - [ ] All changes were made in CoffeeScript files, **not** JavaScript files.
  - [ ] You used [Grunt](https://github.com/jjj/chosen/blob/master/contributing.md#grunt) to build the JavaScript files and tested them locally.
  - [ ] You've updated both the jQuery *and* Prototype versions.
  - [ ] You haven't manually updated the version number in `package.json`.
  - [ ] If necessary, you've updated [the documentation](https://github.com/jjj/chosen/blob/master/docs/options.html).

See the [Pull Requests section of our Contributing Guidelines](https://github.com/jjj/chosen/blob/master/contributing.md#pull-requests) for more details.

### References

If your pull request is in reference to one or more open GitHub issues, please mention them here to keep the conversations linked together.