Bump bootbox version to v4.1.0

* Update bootbox dependency to current latest for [Bootstrap 3 support](http://bootboxjs.com/#dependencies)
* Update bootstrap-sass dependency to support [Boostrap 3](http://getbootstrap.com/)
* Bump gem version to 0.2.0
* Remove travis-ci ruby versions no longer supported in rails-rspec
* Comment out dummy require that caused errors