Add ES6/7 env note. Remove references to bower.

Remove `--save` from npm install because npm@5 saves automatically.

.gitignore

@@ -1,5 +1,4 @@
 node_modules
-bower_components
 coverage
 .DS_Store
 _site

README.md

@@ -3,28 +3,23 @@
 Categorize, sort, and filter a responsive grid of items.
 
 ```bash
-npm install shufflejs --save
+npm install shufflejs
 ```
 
-Shuffle is also available on bower as `shufflejs`.
-
 ## Docs and Demos
 [All found here][homepage]
 
-### Usage (with CommonJS)
+### Usage (with ES6)
 
 ```js
-var Shuffle = require('shufflejs');
+import Shuffle from 'shufflejs';
 
-var myShuffle = new Shuffle(document.getElementById('grid'), {
+const 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/).
 

_config.yml

@@ -11,7 +11,6 @@ exclude:     [
   'node_modules',
   'src',
   'test',
-  'bower.json',
   'CONTRIBUTING.md',
   'gulpfile.js',
   'README.md',

_includes/changelog.html

@@ -1,5 +1,6 @@
 <h2>Changes<a href="#changelog"></a></h2>
 <ul>
+  <li><code>v5.0.0</code> x/x/17 - Change global export from <code>shuffle</code> to <code>Shuffle</code>. Remove bower support. Expect ES6 environment. Make Shuffle instances Event Emitters instead of dispatching <code>CustomEvent</code>.</li>
   <li><code>v4.2.0</code> 5/10/17 - Replace <code>webpack</code> build with <code>rollup</code>. Replace <code>jshint</code> and <code>jscs</code> with <code>eslint</code>. Add <code>filterMode</code> option.</li>
   <li><code>v4.1.1</code> 3/21/17 - the <code>before</code> styles for a <code>ShuffleItem</code> were not applied if the item didn&rsquo;t move.</li>
   <li><code>v4.1.0</code> 1/30/17 - Use webpack-2 to bundle Shuffle.</li>

index.html

@@ -14,9 +14,8 @@ prism: true
       </div>
       <div class="col-12@sm">
         <div class="code-block">
-          <pre><code class="language">npm install shufflejs --save</code></pre>
+          <pre><code class="language">npm install shufflejs</code></pre>
         </div>
-        <p>Shuffle is also available on bower as <code>shufflejs</code>.</p>
       </div>
     </div>
     <div class="row">
@@ -200,6 +199,7 @@ prism: true
       <div class="col-12@sm">
         <h2>Dependencies<a href="#dependencies"></a></h2>
         <p>Shuffle's <a href="{{ site.baseurl }}/package.json">dependencies</a> are bundled with the dist file.</p>
+        <p>Shuffle does, however, expect the following ES6/7 features: <code>Set</code>, <code>Array.from</code>, <code>Object.assign</code>, and <code>Array.prototype.includes</code>. In order to support browsers like IE11 and Safari 8, you must include a polyfill for these features. You can use a service like <a href="https://polyfill.io">polyfill.io</a> to only load the polyfills that specific browser needs, or a polyfill script like <a href="https://www.npmjs.com/package/babel-polyfill">babel-polyfill</a> (which uses <code>core-js</code> internally).</p>
       </div>
     </div>
   </div>