_includes/js_files.html

<script>
  var baseurl = '{{ site.baseurl }}'
</script>
<script src="//code.jquery.com/jquery-1.10.2.min.js"></script>
<script src="{{ "/js/bootstrap.min.js" | prepend: site.baseurl }} "></script>
<script src="{{ "/js/typeahead.bundle.min.js" | prepend: site.baseurl }} "></script>

<script src="{{ "/js/main.js" | prepend: site.baseurl }} "></script>