update: INSTALL.MD

create: LICENSE

create: Readme.md

create: FloydWarshallService.php

create: GraphModel.php, update: ArbitrageController.php, delete: GraphModel.php

update: ExchangeModel.php

create: ExchangeModel.php, GraphModel.php

create: ArbitrageController.php

delete: controllers

create: controllers

create: config.php, update: index.php

create: index_1.php, delete: index.php

update: index.php

update: index.php, delete: tables.sql

create project.md

create tables.sql