Merge pull request #497 from rust-lang/install-nav

feat(nav): add install link

Author: ashleygwilliams

templates/nav.hbs

@@ -8,6 +8,7 @@
   </a>
 
   <ul class="nav list w-100 w-auto-l flex flex-none flex-row flex-wrap justify-center justify-end-l items-center pv2 ph4-ns">
+    <li class="flex-inline pv2 ph2 ph4-ns"><a href="/tools/install">Install</a></li>
     <li class="flex-inline pv2 ph2 ph4-ns"><a href="/learn">Learn</a></li>
     <li class="flex-inline pv2 ph2 ph4-ns"><a href="/tools">Tools</a></li>
     <li class="flex-inline pv2 ph2 ph4-ns"><a href="/governance">Governance</a></li>