WiFi Module not found

Hi,
I'm using the latest 205 firmware on a puckjs and want to connect to wifi. On the IDE if I type even on the left panel I get this...

>var wifi = require("Wifi");
Uncaught Error: Module Wifi not found
 at line 1 col 26
var wifi = require("Wifi");
                         ^

Any idea why it can't fins the module??
I know the IDE is communicating with the puck because I can get it to turn the LED on or off