composer.json

{
    "repositories": [
        {
            "type": "package",
            "package": {
                "name": "brianhaveri/Underscore.php",
                "version": "dev-master",
                "dist": {
                    "url": "https://github.com/brianhaveri/Underscore.php/archive/master.zip",
                    "type": "zip"
                },
                "autoload": {
                    "classmap": ["underscore.php"]
                }
            }
        }
    ],
    "require": {
        "react/partial": "~2.0",
        "nicmart/functionals": "dev-master",
        "brianhaveri/Underscore.php": "dev-master",
        "lstrojny/functional-php": "dev-master",
        "phpoption/phpoption": "1.*"
    }
}