add documentation and restructure to be simpler

_includes/footer-minimal.html

@@ -7,7 +7,10 @@
 	{% else %}
 	  {{ site.time | date: '%Y' }}
 	{% endif %}
-	  •  
-	<a href="{{ site.url }}" target="_blank">{{ site.url-short }}</a>
+	
+    {% if site.url-pretty %}
+    &nbsp;&nbsp;&bull;&nbsp;&nbsp;
+    <a href="{{ site.url }}">{{ site.url-pretty }}</a>
+    {% endif %}	
   </div>
 </footer>