code: function(options, elements) {
        var audioElements = elements || document.getElementsByTagName('audio'),
            instances = []
            options = options || {};
        for (var i = 0, ii = audioElements.length; i < ii; i++) {
          instances.push(this.newInstance(audioElements[i], options));
        }
        return instances;
      }
docs: `createAll()` Creates multiple `audiojs` instances. If `elements` is `null`, then automatically find any `<audio>` tags on the page and create `audiojs` instances for them.