Fix authentication flow on client side

README.md

@@ -28,12 +28,16 @@ __Client side__:
 
 ```javascript
 var socket = io.connect('http://localhost:9000');
-socket.on('connect', function (socket) {
+socket.on('connect', function () {
   socket
+    .emit('authenticate', {token: jwt}) //send the jwt
     .on('authenticated', function () {
       //do other things
     })
-    .emit('authenticate', {token: jwt}); //send the jwt
+    .on('unauthorized', function(msg) {
+      console.log("unauthorized: " + JSON.stringify(msg.data));
+      throw new Error(msg.data.type);
+    })
 });
 ```