Fixed problem with not being able to execute. ALL Tests are now running successfully.

lib/index.js

@@ -137,7 +137,7 @@ function authorize(options, onConnection) {
 
   return function(socket, accept){
     var token, error;
-    var handshake = data.handshake;
+    var handshake = socket.handshake;
     var req = socket.request || socket;
     var authorization_header = (req.headers || {}).authorization;