Weight Watchers Barcode Scanner App - THIS IS AMAZING!!! You scan the barcode and it tells you the points, serving size etc, and you can add it to your tracker right then and there. I love it and the App is free!
Scanner Pro App - If you definitely don't want to get a scanner, a great iOS app called Scanner Pro works amazingly well and I think better than Evernote for actually doing the scans. It aligns your photos and you can even stitch multiple pages together to make one document. You can then export directly to Evernote, Dropbox, Google Drive and more from within the app. At $2.99 it's hard to beat!