Over the past bunch of months, the Razor project has been evolving, going through some changes and the like. I have not been as close to it as I would like. However, one of my fellow Rackers has and has put together a number of really good write-ups:
- http://anystacker.com/2014/01/new-razor-server-vs-old-razor-and-what-does-the-rewrite-mean-to-you/
- http://anystacker.com/2014/01/vagrant-up-razor-server/
- http://anystacker.com/2014/01/razor-server-chef-broker/
- https://github.com/eglute/razor-server-vagrant
The first one should tell you quite a bit about what is changing and what is staying the same in the new version of Razor. The last one, should help you get started with it.