symfony2.1 install composer.json

gistfile1.txt

{
  "require": {
    "php": ">=5.3.6",
    "symfony/symfony": "2.1.*",
    "doctrine/orm": "2.2.*",
    "doctrine/doctrine-bundle": "dev-master",
    "doctrine/data-fixtures": "dev-master",
    "doctrine/doctrine-fixtures-bundle": "dev-master",
    "doctrine/migrations": "dev-master",
    "doctrine/doctrine-migrations-bundle": "dev-master",
    "twig/extensions": "dev-master",
    "symfony/monolog-bundle": "dev-master",
    "symfony/swiftmailer-bundle": "dev-master",
    "symfony/assetic-bundle": "dev-master",
    "sensio/buzz-bundle": "dev-master",
    "sensio/generator-bundle": "dev-master",
    "sensio/distribution-bundle": "dev-master",
    "sensio/framework-extra-bundle": "dev-master",
    "jms/security-extra-bundle": "1.1.*",
    "jms/di-extra-bundle": "1.0.*"
  },
  "suggest": {
    "mageekguy/atoum": "dev-xunit",
    "behat/behat-bundle": "dev-master"
  },
  "autoload": {
    "psr-0": { "": "src/" }
  },
  "scripts": {
    "post-install-cmd": [
      "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
    "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
    "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets"
      ],
    "post-update-cmd": [
      "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
    "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
    "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets"
      ]
  },
  "config": {
    "bin-dir": "bin"
  },
  "extra": {
    "symfony-app-dir": "app",
    "symfony-web-dir": "web"
  }
}