gistfile1.txt

<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet">
<link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet">
<script src="//code.jquery.com/jquery-2.1.1.js"></script>


<script src="http://lipis.github.io/bootstrap-sweetalert/lib/sweet-alert.js"></script>
<link rel="stylesheet" href="http://lipis.github.io/bootstrap-sweetalert/lib/sweet-alert.css">



<button class="sweet-4" >Try It</button>



<script type="application/javascript">

    document.querySelector('.sweet-4').onclick = function(){
        swal({
                    title: "Are you sure?",
                    text: "You will not be able to recover this imaginary file!",
                    type: "warning",
                    animation : 'slide-from-bottom',
                    showCancelButton: true,
                    confirmButtonClass: 'btn-danger',
                    confirmButtonText: 'Yes, delete it!',
                    closeOnConfirm: false,
                    //closeOnCancel: false
                },
                function(){
                    swal("Deleted!", "Your imaginary file has been deleted!", "success");
                });
    };
</script>