Add a favicon/logo to override the default DocFX images

docfx.json

@@ -17,6 +17,7 @@
     "resource": [
       {
         "files": [
+          "images/**",
           "**/*.png",
           "**/*.jpg",
           "**/*.gif",
@@ -33,6 +34,10 @@
     ],
     "dest": "_site",
     "globalMetadataFiles": [],
+    "globalMetadata": {
+      "_appFaviconPath": "images/favicon.ico",
+      "_appLogoPath": "images/logo.png"
+    },
     "fileMetadataFiles": [],
     "template": [
       "default",

templates/material/partials/logo.tmpl.partial

@@ -0,0 +1,5 @@
+{{!Copyright (c) Microsoft. All rights reserved. Licensed under the MIT license. See LICENSE file in the project root for full license information.}}
+
+<a class="navbar-brand" href="{{_rel}}index.html">
+  <img id="logo" class="svg" src="{{_rel}}{{{_appLogoPath}}}{{^_appLogoPath}}logo.png{{/_appLogoPath}}" alt="{{_appName}}" >
+</a>