Add new Servant-based test harness

- Add new Servant-based test harness
- Fix #31
- Introduce pallet-mode
Add necessary servant dirs
Use (f-this-file); fix bad indent
Ignore .vagrant
Add Vagrantfile
Complete Vagrantfile with testing for Emacs 24.2 through 24.4
Fix final tests, update README
Merge pull request #34 from rdallasgray/v0.7

V0.7