[DOC] Add adapter to initialization of express gateway.
[CHORE] Add dependencies in package.json
[TEST] Add test shell, partial of implementation of routes to controllers.
[FEATURE] Add index.js that binds routes, passport to express app.
[FEATURE] Add most basic routes.
[FEATURE] Add passport, middleware, and controllers from main ripple-gateway app.
[CHORE] Bump minor version.