Prepending site.url for search.json

Working on issue #5

Author: digitalman2112

_includes/topnav.html

@@ -65,7 +65,7 @@
                             SimpleJekyllSearch.init({
                                 searchInput: document.getElementById('search-input'),
                                 resultsContainer: document.getElementById('results-container'),
-                                dataSource: '{{ "/search.json" | prepend: site.baseurl }}',
+                                dataSource: '{{ "/search.json" | prepend: site.baseurl | prepend: site.url }}',
                                 searchResultTemplate: '<li><a href="{url}" title="{{page.title | escape }}">{title}</a></li>',
                     noResultsText: '{{site.data.strings.search_no_results_text}}',
                             limit: 10,