add unstable YARN installer, fix Preston's name
diff --git a/download.html b/download.html
index ec40ff1..eef3fa3 100644
--- a/download.html
+++ b/download.html
@@ -125,6 +125,29 @@
 
 
 <div class="col-md-6">
+    <h3 id="yarn-cluster-installer">YARN Cluster Installer</h3>
+
+  </div>
+</div>
+
+<div class="row">
+
+<div class="col-md-6">
+    <p>This is AsterixDB packaged with the YARN installer. If you already have a cluster running Hadoop YARN, this is the easiest way to start out with AsterixDB.</p>
+  </div>
+
+<div class="col-md-6">
+
+    <p><a class="btn btn-md btn-warning" href="https://asterix-jenkins.ics.uci.edu/job/asterix-test-full/lastStableBuild/org.apache.asterix$asterix-yarn/artifact/org.apache.asterix/asterix-yarn/0.8.7-SNAPSHOT/asterix-yarn-0.8.7-SNAPSHOT-binary-assembly.zip" role="button">Download AsterixDB 0.8.7-SNAPSHOT <i class="fa fa-download fa-lg"></i> </a></p>
+
+  </div>
+
+</div>
+
+<div class="row">
+
+
+<div class="col-md-6">
     <h3 id="extras">Extras</h3>
 
   </div>