RFC: pdf.js-hypothes.is as standalone "native" application via Electron

I tend to use hypothes.is as the default PDF annotation tool for my academic literature. Currently, this means having to pull up a PDF in Firefox and activating hypothes.is.

I was wondering what you thought about having pdf.js and hypothes.is running as a standalone application built using [Electron](http://electron.atom.io/). It could be packaged for Linux, OS X and Windows, and would allow users to use a lighter app for viewing PDFs. And when you eventually have offline support for hypothes.is, this will allow me to work with PDFs while travelling without internet!

I would be happy to work on this in my (not-abundant) spare time, but (a) I am not a developer so the learning curve will be steep and (b) this might be something you've already considered and are working on or have dismissed as impractical. :)

No files, tests, or entry points are named. Start by reviewing the repository and the current PDF.js/Hypothesis integration, then assess the Electron packaging approach; done would mean a defined standalone application plan for Linux, OS X, and Windows.

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