Edit in JSFiddle

document.addEventListener("DOMContentLoaded", function () {
    var container2 = document.getElementById('example1'),
        hot;

    hot = new Handsontable(container2, {
        data: Handsontable.helper.createSpreadsheetData(100, 50),
        colHeaders: true,
        rowHeaders: true,
        fixedColumnsLeft: 2,
        autoRowSize: true,
        // tableClassName property since 0.17.0
        tableClassName: ['table', 'table-hover', 'table-striped']
    });
});
<div id="example1"></div>
</style><!-- Ugly Hack due to jsFiddle issue --> 

<link rel="stylesheet" href="http://handsontable.com/dist/handsontable.full.css"> 
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">

<script src="http://docs.handsontable.com/scripts/jquery.min.js"></script> 
<script type="text/javascript" src="http://docs.handsontable.com/bower_components/bootstrap/dist/js/bootstrap.min.js"></script> 

<script src="http://handsontable.com/dist/handsontable.full.js"></script>