presentation: don't show the browser by default

presentation/index.html

@@ -8,8 +8,8 @@
 <script type="text/javascript"> 
 	loadAmber({
 		files: ['Presentation'],
-		packageHome: './',
-		ready: function() {smalltalk.Browser._openOn_(smalltalk.FOSDEM2012Presentation)} 
+		packageHome: './'
+		//ready: function() {smalltalk.Browser._openOn_(smalltalk.FOSDEM2012Presentation)}
 	}); 
 </script>