code: function askiOSPrompt() {
    prompt.get({
      name: 'using_ios',
      description: 'Are you using iOS (y/n)',
      default: 'y'
    }, function (err, result) {
      if (err) {
        return console.log(err);
      }
      mergeConfig(result);
      askiOSPromptResult(result);
      askAndroidPrompt();
    });
  }
docs: Prompt the user if they are integrating Firebase with iOS