Sets up the basic server to run the WtU API:
* Stub "We the Users" API implementation
* Joi validation for the signatures object
* Simple gulp task to run the server
* Configuration via config and JSON objects

Implements a basic faceted API for working with the "We the People" API:
* Hooks for centralized request throttling and queueing
* Authenticated request support
* Petitions / Signatures / Validations facets
* Funtional getPetition and signPetition methods