default config file
```json
    {
        "database" : {
            "driver" : "mysql",
            "host" : "127.0.0.1",
            "port" : 3306,
            "login" : "root",
            "password" : 123,
            "name_db" : "test",
            "path" : "./database.db",
        },
        "node" : {
            port : 8080,
            "secret" : "secret_key",
        }
        "rest" : {
            "port" : 3030,
            "secret" : "secret_key"
        }
    }
```

database.driver : mysql, postgres, mssql, sqlite3


example usage

``` ./core --config config.json ```