Update README

README.md

@@ -82,7 +82,7 @@ You can also manually install the plugin easily to your project. Just download t
 Step 1: Load the following assets in your header. 
 
 ```html
-<link href="http://netdna.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css" rel="stylesheet">
+<link href="http://netdna.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet">
 <link href="path/to/css/star-rating.min.css" media="all" rel="stylesheet" type="text/css" />
 <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
 <script src="path/to/js/star-rating.min.js" type="text/javascript"></script>