fix link to twitter shield followers

Author: ethanshar

README.md

@@ -11,7 +11,7 @@
 [![Build Status](https://travis-ci.org/wix/react-native-ui-lib.svg?branch=master)](https://travis-ci.org/wix/react-native-ui-lib)
 [![npm](https://img.shields.io/npm/v/react-native-ui-lib.svg)](https://www.npmjs.com/package/react-native-ui-lib)
 [![NPM Downloads](https://img.shields.io/npm/dm/react-native-ui-lib.svg?style=flat)](https://www.npmjs.com/package/react-native-ui-lib)
- <a href="https://twitter.com/rnuilib"><img src="https://img.shields.io/twitter/follow/reactnativenav.svg?style=flat&colorA=1DA1F2&colorB=20303C&label=Follow%20us%20on%20Twitter" alt="Follow on Twitter"></a>
+ <a href="https://twitter.com/rnuilib"><img src="https://img.shields.io/twitter/follow/rnuilib.svg?style=flat&colorA=1DA1F2&colorB=20303C&label=Follow%20us%20on%20Twitter" alt="Follow on Twitter"></a>
 
 
 Check out our [Docs](https://wix.github.io/react-native-ui-lib/). <br>