We can add Plataformatec's gem "devise" directly

o gem "devise" supports Rails 4 as of 3.0.0.rc
o Update "Gemfile" and "Gemfile.lock" accordingly
Travis-CI build status at first glance.

o Show Travis-CI build status at first glance
o Reference the fact that tests are now running on Travis-CI
Merge pull request #33 from h5b/cleanup

We can add Plataformatec's gem "devise" directly