add baseof.html example file

search_engine_optimization/layouts/_default/baseof.html

@@ -0,0 +1,28 @@
+<!-- Site Indexing toggled by key value of `private` in Page/Post Settings -->
+<meta name="robots" content=
+{{- if or (.Params.private) (in (string .Permalink) "404.html") (in (string .Permalink) "404.php") -}}
+    "noindex, nofollow"
+{{- else -}}
+    "index, follow"
+{{ end }} />
+
+<!-- Meta Keywords/Tags for Users to search for in Search Engines -->
+<meta name="keywords" content="
+{{- with .Params.tags }}
+    {{- range . -}}
+        {{ with $.Site.GetPage (printf "/%s/%s" "tags" . ) }}
+            {{- .Title -}},
+        {{- end }}
+        {{- end }}
+    {{- else -}}
+        Tutorials, Tips, Linux, Bash, Docker
+{{- end }}" />    
+
+<!-- Canonical URLs -->
+<link rel="canonical" href="{{ .Permalink }}" />
+<link rel="alternate" href="{{ .Permalink }}" hreflang="{{ .Site.LanguageCode }}" />
+
+<!-- Links to RSS Feed -->
+{{ range .AlternativeOutputFormats -}}
+    {{ printf `<link rel="%s" type="%s" href="%s" title="%s" />` .Rel .MediaType.Type .Permalink $.Site.Title | safeHTML }}
+{{ end -}}