Include links to 1.3 executables in gh-pages

docs/templates/index.liquid

@@ -10,6 +10,19 @@
           <img src="{{root}}/jq.png" style="width: 400px; height: 220px; float: left; margin-right: 60px">
           <div id="blurb">
             {{blurb | markdownify}}
+
+            <div class="btn-group" style="float:right">
+              <a class="btn btn-primary dropdown-toggle" data-toggle="dropdown" href="#">
+                Download jq-1.3
+                <span class="caret"></span>
+              </a>
+              <ul class="dropdown-menu">
+                <li><a href="{{root}}/download/linux64/jq-1.3/jq">Linux (64-bit)</a></li>
+                <li><a href="{{root}}/download/osx64/jq-1.3/jq">OS X (64-bit)</a></li>
+                <li><a href="{{root}}/download/">Other platforms and source</a></li>
+              </ul>
+            </div>
+
             <div class="btn-group" style="float:right">
               <a class="btn btn-primary dropdown-toggle" data-toggle="dropdown" href="#">
                 Download jq-{{jq_version}}