Update vagrant

Closes #199 

This adds a couple scripts to launch a rails console and run the spec suite. They can serve as guides for how to run other rails services from inside docker. 
I don't want to remove the container each time so we don't have to re bundle on every run. 

I can't imagine they would change docker inspect to return 0 when it can't find a named container either. Its also a pretty simple change if they do for some reason.