Help needed with Arduino Wifishield Firmware update

Sorry if this is the wrong forum to post as I am an aspiring newbie wanting to learn more about Arduino.

I bought a Arduino Wifishield and I was testing the example codes to display simple html webpage but I can't seem to display it while I can ping to my ip address. I googled and sources told me the firmware has to be updated but I don't understand the instructions here at

It said to download the latest firmware at github but I am unsure on how to download the entire folder at github as a zip file ? Can someone guide me, sorry if this has been answered before but I couldn't find any solutions.

I am using Arduino v1.0.5-r2, running on Windows 8.1.

Thank you.