Add google analytics?

config.toml

@@ -4,3 +4,4 @@ title = "Daniel's Blog"
 theme = "vanilla"
 pygmentsCodeFences = true
 pygmentsStyle = "github"
+googleAnalytics = "UA-145822895-1"

themes/vanilla/layouts/partials/head.html

@@ -9,6 +9,7 @@
     <link rel="stylesheet" href="{{ $style.Permalink }}">
 
     <script src='https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js?config=TeX-MML-AM_CHTML' async></script>
+    {{ template "_internal/google_analytics.html" . }}
 
     <title>{{ .Title }}</title>
 </head>