Update readme

README.md

@@ -1,17 +1,28 @@
-# [Shuffle](http://vestride.github.io/Shuffle) [![Build Status](https://travis-ci.org/Vestride/Shuffle.svg?branch=master)](https://travis-ci.org/Vestride/Shuffle)
+# [Shuffle](https://vestride.github.io/Shuffle) [![Build Status](https://travis-ci.org/Vestride/Shuffle.svg?branch=master)](https://travis-ci.org/Vestride/Shuffle)
 Categorize, sort, and filter a responsive grid of items.
 
 ```bash
-bower install shufflejs
+npm install shufflejs
 ```
 
-Shuffle is also available on NPM as `shufflejs`.
+Shuffle is also available on bower as `shufflejs`.
 
 ## Docs and Demos
-[All found here](http://vestride.github.io/Shuffle)
+[All found here](https://vestride.github.io/Shuffle)
 
-## Shuffle 3.0
-Shuffle 3 is a big refactor from Shuffle 2. Enjoy!
+### Usage (with CommonJS)
+
+```js
+var Shuffle = require('shuffle');
+
+var myShuffle = new Shuffle(document.getElementById('grid'), {
+  itemSelector: '.js-item',
+  sizer: '.js-shuffle-sizer'
+});
+```
+
+## Shuffle 4.0
+Shuffle 4 removes jQuery as a dependency and is written in ES6.
 
 ## Inspiration
 This project was inspired by [Isotope](http://isotope.metafizzy.co/) and [Packery](http://packery.metafizzy.co/).