edit readme

Author: briangonzalez

README.md

@@ -32,7 +32,7 @@ Enable this functionality by adding a data property, `data-ab-css-background` to
 
 Demo 
 -----------
-Here's a little demo of how it works. (1) The page loads (2) the dominant background color of the image is extracted (3) said color is applied to parent of image. __Demo drastically slowed down to show effect__. 
+Here's a little demo of how it works. (1) The page loads (2) the dominant background color of the image is extracted (3) said color is applied to parent of image. _Demo drastically slowed down to show effect_. 
 <img src="https://raw.github.com/briangonzalez/jquery.adaptive-background.js/master/misc/ab.gif">
 
 API