{{ with .Site.Params.googleSiteVerification -}}
<meta name="google-site-verification" content="{{ . }}">
{{ end -}}
{{ with .Site.Params.author -}}
<meta name="author" content="{{ . }}">
{{ end -}}
{{ with .Site.Params.description -}}
<meta name="description" content="{{ . }}">
{{ end -}}
{{ with .Site.Params.keywords -}}
<meta name="keywords" content="{{ . }}">
{{ end -}}
{{ with .Site.Params.referrer -}}
<meta name="referrer" content="{{ . }}">
{{ end -}}