Error deploy App Laravel 5 in Heroku

When executing the $git push heroku master command it throws me the following error:

[Symfony\Component\Debug\Exception\FatalThrowableError]
Class 'Way\Generators\GeneratorsServiceProvider' not found

I followed all the steps of installing the library link and I have no problems locally.

Here is my composer.json:

{
"name": "laravel/laravel",
"description": "The Laravel Framework.",
"keywords": ["framework", "laravel"],
"license": "MIT",
"type": "project",
"require": {
    "php": ">=5.5.9",
    "laravel/framework": "5.1.*",
    "laravelcollective/html": "5.1.*"
},
"require-dev": {
    "fzaninotto/faker": "~1.4",
    "mockery/mockery": "0.9.*",
    "phpunit/phpunit": "~4.0",
    "phpspec/phpspec": "~2.1",
    "xethron/migrations-generator": "dev-l5",
    "way/generators": "dev-feature/laravel-five-stable",
    "barryvdh/laravel-ide-helper": "^2.2",
    "doctrine/dbal": "v2.5.4"
},
"autoload": {
    "classmap": [
        "database"
    ],
    "psr-4": {
        "App\": "app/"
    }
},
"autoload-dev": {
    "classmap": [
        "tests/TestCase.php"
    ]
},
"scripts": {
    "post-root-package-install": [
        "php -r \"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"
},
"repositories": {
    "repo-name": {
        "type": "git",
        "url": "[email protected]:jamisonvalenta/Laravel-4-Generators.git"
    }
}
}