Edit in JSFiddle

<a href="#" class="btn btn-link btn-2x">
  <i class="fa fa-bell-o"></i>
	<span class="badge">5</span>
</a>

<a href="#" class="btn btn-link btn-2x">
  <span class="glyphicon glyphicon-bell"></span>
	<span class="badge">5</span>
</a>

.btn {
	margin: 10px 0 0 10px;
	position: relative;
	display: inline-block;
}
.btn .badge {
	background-color: red;
	font-weight: normal;
	position: absolute!important;
	top: 0;
	left: 25px;
}
.btn-2x {
	font-size: 24px;
	line-height: 18px;
}