fix adress

public/js/main.js

@@ -10,8 +10,8 @@ var cluster = new Cluster();
 cluster.show();
 
 // console.log("Connecting to socket")
-// var socket = io('https://ws.robotlearn.inrialpes.fr');
-var socket = io('0.0.0.0:8888');
+var socket = io('https://ws.robotlearn.inrialpes.fr');
+// var socket = io('0.0.0.0:8888');
 // console.log("Succesfully connected to socket server.")
 
 function update_timestamp() {