Who said you need a smartphone to use Snapchat? A new application in the Mac App Store, appropriately dubbed Snappy, allows you to send and receive Snapchats directly on your computer. Check out the guide below to learn how to go through all of your Snapchat stories, take and send photos with filters, and text just like you would on your mobile device. UPDATE: Snappy no longer works and is no longer supported by Snapchat or the Snappy developers. Some of you may still be able to use it depend...