[TASK] Update README with usage instructions and development notes
[TASK] Update README with usage instructions and development notes

hserang/gatewayd-admin-seeds,dabibbit/gatewayd-quoting-app,n0rmz/gatewayd-client,dabibbit/gatewayd-banking-app,n0rmz/gatewayd-client,dabibbit/gatewayd-quoting-app,cryptospora/gatewayd-basic-app,dabibbit/gatewayd-banking-app,AiNoKame/gatewayd-basic-admin-dec,AiNoKame/gatewayd-basic-admin-phase-1