$ bower install underscore.string --save-dev

<script type="text/javascript" src="vendor/loadash/lodash.js"></script>
<script type="text/javascript" src="vendor/angular/angular.js"></script>
<script type="text/javascript" src="vendor/angular-loadash/angular-loadash.js"></script>
<script type="text/javascript" src="vendor/underscore.string/underscore.string.js">