Link download to releases page

Author: adamschwartz

docs/welcome/index.html

@@ -219,7 +219,7 @@ <h1>Sortable</h1>
             <h2>The simplest, most elegant way to sort a table.</h2>
             <p>
                 <a class="button" href="http://github.com/hubspot/sortable">★ On Github</a> &nbsp;&nbsp;
-                <a class="button dark" href="http://github.com/hubspot/sortable">Download</a>
+                <a class="button dark" href="https://github.com/HubSpot/sortable/releases">Download</a>
             </p>
             <table class="sortable-theme-light" data-sortable>
                 <thead>