Discourse as Your First Rails App

Are the instructions in the first post still up-to-date? How about the Vagrant image itself? I’ve installed VirtualBox, Vagrant, and the Discourse repository. After SSH’ing into Vagrant and CD’ing into the Vagrant directory, I can’t bundle install due to a missing gemfile. First time using a VM, so I may indeed be doing something rather silly.

Windows 7 x64
VirtualBox 4.3.20
Vagrant 1.7.2