Add a browser warning page

[gbinal]

http://browser-update.org/

<script type="text/javascript"> 
var $buoop = {vs:{i:8,f:10,o:12,s:5}}; 
$buoop.ol = window.onload; 
window.onload=function(){ 
 try {if ($buoop.ol) $buoop.ol();}catch (e) {} 
 var e = document.createElement("script"); 
 e.setAttribute("type", "text/javascript"); 
 e.setAttribute("src", "//browser-update.org/update.js"); 
 document.body.appendChild(e); 
} 
</script> 

[gbinal]

Closing this issue in favor of the thread at #107