Tool Started 4-18-14. Last Updated 4-19-14 Apologies. This post is in progress. I can't find where to hide it while being developed, so I thought I would rush and add some content over the next few days.
Make note that the Arduino screw shield is not required. An electric imp however is required. Without the Arduino screw shield, you can make this complete circuit and start harvesting temperatures wherever you have internet access.