Figure out how to add plasma paper annotations

[smartcontracts]

We've had a PR for the plasma paper annotations open here for a while: #56

I'd like to get this added to the website. A few questions to answer first:

• Where on the website should this be featured?
• How should we actually present the annotations?

I was thinking we could put it in the Resources page, and use something like pdfjs to show the paper + annotations. I'm not 100% sure about this. I'd really like to see the paper rehosted here with the annotations overlaid somehow...