Initial check in

Signed-off-by: Juan C. Méndez <jcmendez@alum.mit.edu>
Merge branch 'master' of github.com:jcmendez/JCMTimeSlider
Updating sample app

Signed-off-by: Juan C. Méndez <jcmendez@alum.mit.edu>
Prevent user interaction while snapping

Signed-off-by: Juan C. Méndez <jcmendez@alum.mit.edu>