code: function (username, channel) {
          var userChannels = this.getUserNotifications(username);
  
          // if the user doesn't already have an entry add one
          if (userChannels === null) {
              userChannels = [];
  
              // update the user to add them to the latest videos list
              this.latestVideos.getLatestVideos(username);
  
              this.notifications.push({
                  username: username,
                  channels: userChannels
              });
          }
  
          // dont allow duplicate channel names
          if (userChannels.indexOf(channel) !== -1) {
              return false;
          }
  
          // add the channel to the user and save data
          userChannels.push(channel);
          this.saveNotifications();
          return true;
      }
docs: Adds the given username to the list of names for notifications
  
  @param {string} username - The account name to check for
  @param {string} channel - The channel to send the notification to
  @returns {boolean} true if added, false if already in the list