This commit adds a Rakefile, Gemfile, and Travis CI config file.
The Rakefile contains two tasks: test and junit. Both targets execute
the spec tests, with the difference being how the results are presented.
The Gemfile defines dependencies and a test group. To install just the
gems needed for running the application, execute:
* `bundle install --without test`
The new .travis.yml file is for Travis CI and targets the major ruby
versions.