Update readme layout

Author: ctrlplusb

README.md

@@ -5,6 +5,8 @@
   <p align='center'>Make your React Components aware of their width and/or height!</p>
 </p>
 
+<p>&nbsp;</p>
+
 [![npm](https://img.shields.io/npm/v/react-sizeme.svg?style=flat-square)](http://npm.im/react-sizeme)
 [![MIT License](https://img.shields.io/npm/l/react-sizeme.svg?style=flat-square)](http://opensource.org/licenses/MIT)
 [![Travis](https://img.shields.io/travis/ctrlplusb/react-sizeme.svg?style=flat-square)](https://travis-ci.org/ctrlplusb/react-sizeme)