The only way to test travis is to deploy to master with a `.travis.yml` file and wait for travis-ci to pick up the change. To do some pre-testing here, the `Vagrantfile` has been split into two distinct machines:
* `default` is, as before, the full reddit build (we have an opportunity to rename this)
* `travis` is a minimal install with only the packages and services required to run `nosetests` against the codebase. It tries to mimic what will happen when we try to build this on travis-ci's workers.
As part of this addition, I've moved `install-reddit.sh` to `install/reddit.sh` and populated that `install` folder with common scripts used for both `default` and `travis` builds.
