Add google verification meta

Author: shomykohai

_includes/head.html

@@ -6,5 +6,6 @@
     <title>{%- if page.title -%}{{page.title}} | {{site.title}}{%- else -%}{{site.title}}{%- endif -%}</title>
     <link rel="stylesheet" href="{{ "/assets/css/style.css" }}">
     <link rel="icon" type="image/png" href="{{ "/assets/favicon.png" | relative_url }}" />
+    <meta name="google-site-verification" content="DiXEB7EM1azgI5PAyoE4yt1lj8X7rkAKwkmpCHlzoPs" />
     {%- feed_meta -%}
   </head>