Intuit has released TurboTax SnapTax, a new tax preparation app for the iPhone that allows U.S. and Canadian users to prepare simple tax returns by snapping a picture of their W-2 or T4, answering some basic questions and then reviewing and securely filing their return electronically. Available in separate country-specific versions, users can download the free SnapTax app to prepare their returns and pay via in-app purchase when filing; U.S. federal…