Updated README

Author: chrisriesgo

README.md

@@ -10,8 +10,4 @@ I have examples that show the CarouselView used as:
 - A gallery-style control with **dots** as page indicators
 - A full-page control with **tabs** as page indicators
 
-<style>
-img.aligncenter {display: block; margin-left: auto; margin-right: auto;}
-</style>
-
-<img class="aligncenter" height="500" src="https://github.com/chrisriesgo/xamarin-forms-carouselview/blob/master/Images/carousel_view.gif" />
+<img height="500" src="https://github.com/chrisriesgo/xamarin-forms-carouselview/blob/master/Images/carousel_view.gif" />