docs: function promptUser(callback) {
    inquirer.prompt([
      {
        type: 'list',
        name: 'format',
        message: 'What format do you want your config file to be in?',
        default: 'JSON',
        choices: ['JSON', 'YAML']
      }
    ], function(answers) {
      var config = processAnswers(answers);
      writeFile(config, answers.format === 'JSON', callback);
    });
  }