Don't have a how-to with photos. Although that would be a good addition to the basic tutorial. Looking at the photo below: the 3 sets of jumper pads below the soldering iron are (from right to left) A0 - A3. If you look closely, you will see 3 small bridges from the center pads to the upper pads. These are tying the address pins to GND. If you cut one of those bridges with a knife and solder a blob between the center pad and the lower pad, it will tie the address pin to 3.3v.