split out bootstrap style

examples/position.html

@@ -3,7 +3,7 @@
 
   <script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.js"></script>
   <script src="../dist/notify.js"></script>
-
+  <script src="../dist/styles/notify-bootstrap.js"></script>
 
   <style type="text/css">
     .boxes {