Add initial vagrant support

This work allows for the use of Vagrant to create and manage a VM for CodeMontage to run on in development. It creates the VM and allows the user to SSH into that VM to work with CodeMontage in console mode.

There is (a bug)[http://stackoverflow.com/questions/19124367/rails-app-on-percise32-vagrant-box-assets-get-text-file-busy-error-errnoe] with the current version of sass-rails that generates an error on many VMs including this one generated by Vagrant. Unfortunately, changing to a specific version of sass-rails either causes a conflict with the currently-used version of rails or with acts_as_gmappable.

Addressing the delicate balance among sass-rails, rails, and acts_as_gmappable is outside the scope of this issue. This PR only addresses the creation of a vagrant-based environment, not the compatibility issues among gems.