docs: function(credentials){
    //this is internal to the mock to give option to the dev to change the tweet mocks
    credentials = typeof credentials === 'undefined' ? {} : credentials;
    credentials.tweets = typeof credentials.tweets === 'undefined' ? require('./data/tweets.json') : credentials.tweets;
    credentials.singleRun = typeof credentials.singleRun === 'undefined' ? true : credentials.singleRun;
    credentials.tweetDelay = typeof credentials.tweetDelay === 'undefined' ? 100 : credentials.tweetDelay;
    this._tweetsMock = credentials.tweets;
    this._singleRun = credentials.singleRun;
    this._tweetDelay = credentials.tweetDelay;
  }