feat(head): add favicon support

exampleSite/config.toml

@@ -9,6 +9,7 @@ paginate = 5
     avatar = "img/avatar.jpg"
     subtitle = "和世界分享刚编的破事"
     postLicense = "Licenced under CC BY-NC-SA 4.0"
+    favicon = ""
     [params.widgets]
         enabled = ['archive', 'tag-cloud']
         [params.widgets.tagCloud]

layouts/partials/head.html

@@ -15,4 +15,10 @@
     {{ range .AlternativeOutputFormats -}}
         <link rel="{{ .Rel }}" type="{{ .MediaType.Type }}" href="{{ .Permalink | safeURL }}">
     {{ end -}}
+
+    {{- if .Site.Params.favicon -}}
+        {{- $logo := resources.Get .Site.Params.favicon -}}
+        {{- $favicon := $logo.Resize "32x" -}}
+        <link rel="icon" type="image/png" href="{{ $favicon.RelPermalink }}" />
+    {{- end -}}
 </head>