Take a look at the attachment below. On page 5, it gives you a layout of what each pin does, and if you look at pin P04 and P05, you will see a secondary function. P04 is the clock, and P05 is the data, so with that, you basically only need two pins to get it to work, but you also need to send the correct data too.
The library was made to send said data, and all you need to do is wire it correctly.