Merge pull request #90 from extend1994/add-badge

Add CDNJS version badge in README.md

Author: avoidwork

README.md

@@ -1,6 +1,6 @@
 # filesize.js
 
-[![build status](https://secure.travis-ci.org/avoidwork/filesize.js.svg)](http://travis-ci.org/avoidwork/filesize.js)  [![downloads](https://img.shields.io/npm/dt/filesize.svg)](https://www.npmjs.com/package/filesize)
+[![build status](https://secure.travis-ci.org/avoidwork/filesize.js.svg)](http://travis-ci.org/avoidwork/filesize.js)  [![downloads](https://img.shields.io/npm/dt/filesize.svg)](https://www.npmjs.com/package/filesize) [![CDNJS version](https://img.shields.io/cdnjs/v/filesize.svg)](https://cdnjs.com/libraries/filesize)
 
 filesize.js provides a simple way to get a human readable file size string from a number (float or integer) or string.