initial stab at preloader control
adding preloader code
Merge remote-tracking branch 'upstream/2.5.0-wip' into preloader
Merge branch 'preloader' of github.com:kevinparkerson/fuelux into preloader

Conflicts:
	dist/less/preloader.less
	index.html
Merge remote-tracking branch 'upstream/2.5.0-wip' into preloader

Conflicts:
	dist/css/fuelux.min.css
Merge pull request #321 from kevinparkerson/preloader

Add a preloader