function renderChoices(choices, pointer) {
  var output = '';

  choices.forEach(function (choice) {
    output += '\n  ';

    if (choice.type === 'separator') {
      output += ' ' + choice;
      return;
    }

    var choiceStr = choice.key + ') ' + choice.name;
    if (pointer === choice.key) {
      choiceStr = chalk.cyan(choiceStr);
    }
    output += choiceStr;
  });

  return output;
}
Function for rendering checkbox choices
@param  {String} pointer Selected key
@return {String}         Rendered content