I set up a demo version on my local ubuntu install, had a hell of a time debugging issues with the /sponsors/* pages, but it turns out it "sponsors" is an html class key term caught by adblocker.
This pull request has a patch for that plus some updates to the README I found useful to get it started.
Thanks to @dweebit for the installation notes: https://github.com/OAhack/symposion
adds site_media to .gitignore
changes body class sponsors --> sponsorship to handle addblocker fire…
adds demo installation instructions and note on fixture data