Setup instruction updates

A number of updates to the Ursula code base based on setup work tonight:

- Fix a left over echo artifact in bin/ursula that was preventing ursula from working
- Syntax cleanup on Vagrantfile
- Rename bin/run_vagrant.sh -> bin/run_vagrant to match other binary names
- Additional debugging error strings added to run_vagrant
- Remove silly line in gen-cert
- Peg to ansible 1.6 in check-deps
- Documentation cleanup to both the README.md file and the dev-test.md file