Symfony Best Practices

// composer.json
{
    "require": {
        "php": ">=5.3.3",
        "symfony/symfony": "2.5.*", // v2.5.5
        "doctrine/orm": "~2.2,>=2.2.3", // v2.4.5
        "doctrine/doctrine-bundle": "~1.2", // v1.2.0
        "twig/extensions": "~1.0", // v1.1.0
        "symfony/assetic-bundle": "~2.3", // v2.3.0
        "symfony/swiftmailer-bundle": "~2.3", // v2.3.7
        "symfony/monolog-bundle": "~2.4", // v2.6.1
        "sensio/distribution-bundle": "~3.0", // v3.0.6
        "sensio/framework-extra-bundle": "~3.0", // v3.0.2
        "incenteev/composer-parameter-handler": "~2.0", // v2.1.0
        "hautelook/alice-bundle": "~0.1" // 0.1.5
    },
    "require-dev": {
        "sensio/generator-bundle": "~2.3" // v2.4.0
    }
}