Lint lib

- ;
- Long lines
- `FitBit` looked like a constructor but isn't
Lint proxy

- ;
- `Fitbit` looked like a constructor but isn't
Lint auth

- ;
- Leading commas
- Require modules at top of file
    - `querystring` wasn't used
- Long lines
Merge branch 'lint-fitbit'

* lint-fitbit:
  Lint auth
  Lint proxy
  Lint lib

Conflicts:
	lib/services/fitbit/proxy.js