Add jsDelivr hits badge (#296)

Author: LukasDrgon

README.md

@@ -1,6 +1,8 @@
 # <img src="http://rangeslider.js.org/rangeslider.js.png" width="50" valign="middle"> rangeslider.js
 
-[![Build Status](https://travis-ci.org/andreruffert/rangeslider.js.svg?branch=develop)](https://travis-ci.org/andreruffert/rangeslider.js) [![npm downloads](https://img.shields.io/npm/dt/rangeslider.js.svg)](https://www.npmjs.com/package/rangeslider.js) [![npm version](https://img.shields.io/npm/v/rangeslider.js.svg)](https://www.npmjs.com/package/rangeslider.js)
+[![Build Status](https://travis-ci.org/andreruffert/rangeslider.js.svg?branch=develop)](https://travis-ci.org/andreruffert/rangeslider.js)
+[![jsDelivr Hits](https://data.jsdelivr.com/v1/package/npm/rangeslider.js/badge?style=rounded)](https://www.jsdelivr.com/package/npm/rangeslider.js) 
+[![npm downloads](https://img.shields.io/npm/dt/rangeslider.js.svg)](https://www.npmjs.com/package/rangeslider.js) [![npm version](https://img.shields.io/npm/v/rangeslider.js.svg)](https://www.npmjs.com/package/rangeslider.js)
 
 > Simple, small and fast JavaScript/jQuery [polyfill](https://remysharp.com/2010/10/08/what-is-a-polyfill) for the HTML5 `<input type="range">` slider element.
 
@@ -24,4 +26,4 @@ Check out the [examples](http://rangeslider.js.org/).
 ## License
 MIT © [André Ruffert](http://andreruffert.com)
 
-[![rangeslider.js](https://img.shields.io/badge/rangeslider-.js-00ff00.svg)](http://rangeslider.js.org) [![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/andreruffert/rangeslider.js) [![JS.ORG](https://img.shields.io/badge/js.org-rangeslider-ffb400.svg?style=flat-square)](http://js.org)
+[![rangeslider.js](https://img.shields.io/badge/rangeslider-.js-00ff00.svg)](http://rangeslider.js.org) [![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/andreruffert/rangeslider.js) [![JS.ORG](https://img.shields.io/badge/js.org-rangeslider-ffb400.svg?style=flat-square)](http://js.org)