Nodemailer's API changed recently, so sending via SMTP will be broken
for anyone who installs the package in its current state. Also, added a
shrinkwrap file to prevent this from happening in the future.
This commit includes the following changes:
- Renamed `test/test.setup` -> `test/config.js` to match standard
- Changed Makefile to use the local copy of mocha (recursive)
- Wrote docs for running the tests