TASK: Update website link of Javi to twitter

The website was offline and only returned a 404 error. So we link now to his twitter profile.

Author: markusguenther

README.md

@@ -179,7 +179,7 @@ The returned component accepts a `theme`, `composeTheme`, `innerRef` and `mapThe
 
 ## About
 
-The project is originally authored by [Javi Velasco](http://www.javivelasco.com) as an effort of providing a better customization experience for [React Toolbox](http://react-toolbox.io). Any comments, improvements or feedback is highly appreciated.
+The project is originally authored by [Javi Velasco](https://twitter.com/javivelasco) as an effort of providing a better customization experience for [React Toolbox](http://react-toolbox.io). Any comments, improvements or feedback is highly appreciated.
 
 Thanks to [Nik Graf](http://www.twitter.com/nikgraf) and [Mark Dalgleish](http://www.twitter.com/markdalgleish) for their thoughts about theming and customization for React components.