code: function loadSavedState () {
      var output;
      try {
          output = jsonfile.readFileSync(STATE_FILE);
      } catch (ex) {
          winston.info('No previous state found, continuing');
          output = {
              subscriptions: [],
              callback: '',
              history: {},
              version: '0.0.0'
          };
      }
      return output;
  }
docs: Load the saved previous state from disk
  @method loadSavedState
  @return {Object} Configuration