added yui for on-the-fly css pseudo element changes
Merge remote-tracking branch 'origin/monday-changes'

Conflicts:
	index.html

	modified:   .sass-cache/8ce608b59ef0c33104e5d203d747fcdde8dfa6c8/main.scssc
	new file:   JS/vendor/yui-min.js
	modified:   index.html
	modified:   sass/main.scss
	modified:   stylesheets/main.css