Avoid link (avoid multiple requests)

controllers/before-begin/views/index.jade

@@ -10,4 +10,11 @@ block content
         saw in the tutorial : they are here to help you navigate in the scene.
         Use them or ignore them at your convenience.
 
-    p You can start <a href='/prototype/game'>when you're ready</a> !
+    button#next.btn.btn-success.navbar-btn(style={'margin-right':'10px', 'margin-bottom':'10px'})
+        span Go to the next step
+    script.
+        document.getElementById('next').onclick = function() {
+            document.getElementById('next').disabled = true;
+            window.location = '/prototype/game';
+        }
+

server.js

@@ -94,7 +94,7 @@ app.use(function(req, res) {
 var serverPort, serverIpAddress;
 if ( isDev ) {
     serverPort = 4000;
-    serverIpAddress = '147.127.121.42';
+    serverIpAddress = 'localhost';
 } else {
     // Openhift conf
     serverPort = process.env.OPENSHIFT_NODEJS_PORT || 8080;