[website] ’Install’ -> ‘How to use’

website/templates/_scaffold.html

@@ -111,7 +111,7 @@ ga('send', 'pageview');
 							</a>
 						</li>
 						<li class="dropdown">
-							<a href="/setup/overview" class="smallOnly"><span>Install</span></a>
+							<a href="/setup/overview" class="smallOnly"><span>How to use</span></a>
 							<a class="dropdown-toggle pointer wideOnly" data-toggle="dropdown">Install<span class="caret"></span></a>
 							<ul class="dropdown-menu" aria-labelledby="themes">
 								<#list setupTargets as cat, tgtList>