Fixed typo in documentation sample code

Author: williewheeler

README.md

@@ -41,7 +41,7 @@ Include necessary scripts and styles:
   <script type="text/javascript" src="/bower_components/moment/min/moment.min.js"></script>
   <script type="text/javascript" src="/bower_components/bootstrap/dist/js/bootstrap.min.js"></script>
   <script type="text/javascript" src="/bower_components/eonasdan-bootstrap-datetimepicker/build/bootstrap-datetimepicker.min.js"></script>
-  <link rel="stylesheet" href="/bower_components/bootstrap/dist/css/boostrap.min.css" />
+  <link rel="stylesheet" href="/bower_components/bootstrap/dist/css/bootstrap.min.css" />
   <link rel="stylesheet" href="/bower_components/eonasdan-bootstrap-datetimepicker/build/css/bootstrap-datetimepicker.min.css" />
 </head>
 ```