Composer de meu projeto

composer.json

{
    "name": "codecasts/laravel",
    "description": "The Laravel Framework - CODECASTS Skeleton.",
    "keywords": ["framework", "laravel", "codecasts"],
    "license": "MIT",
    "type": "project",
    "repositories": [
        {
            "type": "path",
            "url": "../Dotenv_libraries/Socialize/",
            "options": {
                "symlink" : true
            }
        }
    ],
    "require": {
        "php": ">=5.6.4",
        "laravel/framework": "5.3.*",
        "codecasts/support": "^1.0",
        "league/fractal": "^0.13.0",
        "predis/predis": "^1.1",
        "phpsc/pagseguro": "1.0.0alpha7",
        "laravel/passport": "~1.0",
        "artesaos/defender": "^0.6.2",
        "intervention/image": "^2.3",
        "intervention/imagecache": "^2.3",
        "alancole/vouchers": "^1.0",
        "dotenv/socialize": "*"
    },
    "require-dev": {
        "fzaninotto/faker": "~1.4",
        "mockery/mockery": "0.9.*",
        "phpunit/phpunit": "~5.0",
        "symfony/css-selector": "3.1.*",
        "symfony/dom-crawler": "3.1.*"
    },
    "autoload": {
        "psr-4": {
            "App\\": "app/"
        }
    },
    "autoload-dev": {
        "classmap": [
            "tests/TestCase.php"
        ]
    },
    "scripts": {
        "post-root-package-install": [
            "php -r \"file_exists('.env') || copy('.env.example', '.env');\""
        ],
        "post-create-project-cmd": [
            "php artisan key:generate"
        ],
        "post-install-cmd": [
            "Illuminate\\Foundation\\ComposerScripts::postInstall",
            "php artisan optimize"
        ],
        "post-update-cmd": [
            "Illuminate\\Foundation\\ComposerScripts::postUpdate",
            "php artisan optimize"
        ]
    },
    "config": {
        "preferred-install": "dist"
    }
}