Can I import PDFs?

Currently you can't import PDFs as storyboards but here is a link to an app that converts your PDFs to jpgs https://itunes.apple.com/ca/app/any-free-pdf-to-jpg-converter/id683160697?mt=12 

and here's how to do it on your Mac:

 http://www.pdfmate.com/how-to-convert-pdf-to-jpg-jpeg-on-mac.html
1. Open the PDF in Preview.

 2. Click the "File" menu and choose "Print."

 3. Select the "PDF" drop-down menu and click "Save PDF to iPhoto." Preview will automatically save each page of the PDF as a JPEG.