docs: function ensureLogsRotated(stats){
      // TODO: other writes should wait until this is done
      var today = new Date(),
          modifiedDate = new Date(stats.mtime),
          archivedFileName;
  
      if(!_logDatesMatch(today, modifiedDate)){
          archivedFileName = _createRotatedLogName(this.config.path, modifiedDate);
          console.log('Log file modified previous to today, archiving to: ' + archivedFileName);
  
          return fs.renameAsync(this.config.path, archivedFileName)
              .bind(this)
              .then(this.createEmptyFile);
      }
  }