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 branch 'cleanup' into graveio-box
How to boostrap the Virtual Development Machine.

o Add prerequisites of the Virtual Development Machine
o Explain the bootstrap process
o Setting up graveio on Virtual Machine
o Add Vagrant-specific TODOs