Github provides a great interface for gathering, peer reviewing and accepting papers for conference proceedings, the second step is to publish them on a website either in HTML or PDF form or both. The Scipy conference is at the forefront on this and did great work in peer reviewing on Github, see:

I wanted to develop a system to make it easier to continously publish updated versions of the papers and also leverage FigShare to provide a long term repository, a sharing interface and a DOI.

I based it on the blog engine Pelican, developed a plugin figshare_pdf to upload a PDF of an article via API and configured Travis-ci as building platform.

See more details on the project page on Github: