preview image for gh-pages
add demo to gh-pages
Merge branch 'master' into gh-pages
update gh-pages
Merge branch 'master' into gh-pages

Conflicts:
	README.md
hook up the labels on the demo page
Merge branch 'master' into gh-pages
Merge branch 'yuri' into gh-pages
add a blank placeholder for the demo so that the empty option isn't shown