Merge pull request #2 from chrismattmann/gh-pages

add participants
Fix README.
fix participant bg css.
fix css - participants with an s.
add Jihoon.
Merge branch 'gh-pages' of github.com:chrismattmann/datavis-hackathon into gh-pages
update participants for 10/23.
Merge https://github.com/NSF-Polar-Cyberinfrastructure/datavis-hackathon into gh-pages
Merge pull request #70 from chrismattmann/gh-pages

Update participant list for 10/23 this fixes #67