Bump bootbox version to v4.1.0

* Update bootbox dependency to current latest
* Update bootstrap-sass dependency to support Boostrap 3
* 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
Merge pull request #4 from mmoss/bump_bootbox_version

Bump bootbox version to v4.1.0