Added VM download button

Author: xezpeleta

index.html

@@ -36,7 +36,7 @@
       ga('send', 'pageview');
 
     </script>
-    
+
     <link href='http://fonts.googleapis.com/css?family=Open+Sans:400,300,600,300italic,400italic,600italic' rel='stylesheet' type='text/css'>
 </head>
 
@@ -95,7 +95,10 @@
             </div>
             <div class="col-lg-8 col-lg-offset-2 text-center">
                   <a href="https://github.com/elkarbackup/elkarbackup/wiki/Installation" class="btn btn-lg btn-outline">
-                      <i class="fa fa-download"></i> Installation
+                      <i class="fa fa-wrench"></i> Installation
+                  </a>
+                  <a href="https://github.com/elkarbackup/elkarbackup/wiki/DownloadVirtualMachine" class="btn btn-lg btn-outline">
+                    <i class="fa fa-download"></i> Ready-to-use VM
                   </a>
                   <br />
             </div>