[DOC] Add ./bin/start to README.
[CHORE] Add dependencies.
[CHORE] Move src/index to src/server
[FEATURE] Add config.
[FEATURE] Add Gatewayd class.
[TEST] Add setup endpoints.
[FEATURE] Add bin/start executable.
[CHORE] Move bin/start to ./gatewayd.
[DOC] Update start documentation.
[FEATURE] Require parameters to start gateway.
[CHORE] Add current version of /lib.