Adding comments and photo to mini-benchmark readme

examples/mini-benchmark/README.md

@@ -1,11 +1,14 @@
 # Mini Benchmark
 Check how long making a simple addition one million times takes in JavaScript vs Webassembly.
 
+![](https://i.imgur.com/35yItYN.png)
+
 #### Setup
 $ npm install
 
 #### Development build
 $ npm start
+
 Open http://localhost:5000/
 
 #### Production build

examples/mini-benchmark/src/js/main.js

@@ -5,22 +5,34 @@ const bench = 1000000;
 
 (async function() {
   try {
+    /**
+     * Destructure add func from WASM file.
+     */
     const { exports: { add } } = await wasm.load("program.wasm");
 
+    /**
+     * JavaScript benchmark.
+     */
     let start = new Date().getTime();
     for (let e = 0; e < bench; e++) {
       const result = numOne + numTwo;
     }
     let end = new Date().getTime();
     const timeOne = end - start;
 
+    /**
+     * WebAssembly benchmark.
+     */
     start = new Date().getTime();
     for (e = 0; e < bench; e++) {
       const result = add(numOne, numTwo);
     }
     end = new Date().getTime();
     const timeTwo = end - start;
 
+    /**
+     * Display results.
+     */
     if (timeOne > timeTwo) {
       alert(`WASM was faster by ${Math.round(timeOne / timeTwo * 100)}%`);
     } else {