Add CDNJS version badge in README.md
@ -6,6 +6,8 @@
[![ProjectTalk Messageboard](http://www.projecttalk.io/images/gh_badge-3e578a9f437f841de7446bab9a49d103.svg?vsn=d)](http://www.projecttalk.io/boards/Semantic-Org%2FSemantic-UI?utm_campaign=gh-badge&utm_medium=badge&utm_source=github)
[![CDNJS](https://img.shields.io/cdnjs/v/semantic-ui.svg)](https://cdnjs.com/libraries/semantic-ui/)
Semantic is a UI framework designed for theming.
Key Features