add option to name the "Home" link

_includes/header.html

@@ -1,7 +1,7 @@
 <header>
 	<nav>
 		<ul>
-			<li><a href="{{ site.baseurl | append: '/' }}">Home</a>
+			<li><a href="{{ site.baseurl | append: '/' }}">{{ site.nav.home | default: "Home" }}</a>
 			{% if jekyll.environment == 'local' %}
 				<li><a href="{{ site.baseurl | append: '/private/' }}">Private</a>
 			{% endif %}