Capistrano setup

This is the initial setup for capistrano deployment. It *should* do the git pull, recompile assets, db migration, and apache restart all automatically. I think more needs to be done and some testing but it is finally getting started.
I left thinking we decided on the opposite.  bz-stable was going to be for staging upstream PRs and bz-master was going to be what our server ran and would be what we merged our bz-staging changes and pulled upstream changes into (through bz-staging first though).  I think the Readme reflects this, but honestly, I had trouble following it and had plans to do a second pass to clarify once we actually had the dev process going.