Added HTMLExporter.

examples/js/exporters/HTMLExporter.js

+/**
+ * @author mrdoob / http://mrdoob.com/
+ */
+
+THREE.HTMLExporter = function () {};
+
+THREE.HTMLExporter.prototype = {
+
+	constructor: THREE.HTMLExporter,
+
+	parse: function ( scene ) {
+
+		return output;
+
+	}
+
+}