Add favicon

Author: joshmoore

_includes/head.html

@@ -8,4 +8,13 @@
   {%- if jekyll.environment == 'production' and site.google_analytics -%}
     {%- include google-analytics.html -%}
   {%- endif -%}
+  <!-- favicon by https://realfavicongenerator.net/ -->
+  <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png?v=4">
+  <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png?v=4">
+  <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png?v=4">
+  <link rel="manifest" href="/site.webmanifest?v=4">
+  <link rel="mask-icon" href="/safari-pinned-tab.svg?v=4" color="#5bbad5">
+  <link rel="shortcut icon" href="/favicon.ico?v=4">
+  <meta name="msapplication-TileColor" content="#603cba">
+  <meta name="theme-color" content="#ffffff">
 </head>

android-chrome-192x192.png

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<browserconfig>
+    <msapplication>
+        <tile>
+            <square150x150logo src="/mstile-150x150.png?v=4"/>
+            <TileColor>#603cba</TileColor>
+        </tile>
+    </msapplication>
+</browserconfig>