Use require-all module to make internal module exports easier.

- Update package.json.
- Convert models index to use require-all.
Merge pull request #105 from sgunturi/require-all

Use require-all module to make internal module exports easier.
Configure logging to easily output debug data.

- Add tracer and chalk to package.json.
- Add log module.
- Configure logging for model methods, middleware, API routes, and main
  file.
Merge pull request #106 from sgunturi/update-logging

Configure logging to easily output debug data.
Bump to 1.0.8.