The following code shows how to create Button with icons.
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" type="text/css"
href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.0/css/bootstrap-combined.min.css">
<script type='text/javascript'
src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" type="text/css"
href="http://netdna.bootstrapcdn.com/font-awesome/3.0.2/css/font-awesome.css">
</head><!--from w ww .jav a2 s. co m-->
<body>
<p>
<a href="#" class="btn btn-success"><i
class="icon-refresh icon-spin"></i> Reload</a>
</p>
</body>
</html>