--post-js file for ES6 export support #7, update essentiajstools.js

src/js/essentia.jstools.js

@@ -1,8 +1,7 @@
-
 /*
 Class with utility methods to use essentia.js
 */
-class EssentiaJsTools {
+export class EssentiaJsTools {
 
 	constructor(essentiaWasmModule) {
 		this._module = essentiaWasmModule;
@@ -35,6 +34,3 @@ class EssentiaJsTools {
 	// add your essentia.js utility funcs here
 
 }
-
-
-export { EssentiaJsTools };

src/js/wasm.module.post.js

@@ -1,4 +1,4 @@
 // EXPORT_ES6 option does not work as described at
-// https://github.com/kripken/emscripten/issues/6284, so we have to
-// manually add this by '--post-js' setting when the Emscripten compilation.
+// https://github.com/emscripten-core/emscripten/issues/6284, so we have to
+// manually add this to the final builds.
 export default Module;