Accessibility and animations

[marcysutton]

What a cool library you've got here! In the spirit of being plug-and-play, I thought it would be extra awesome if there was a way to easily turn animations on and off. For users with motion sensitivity, vestibular disorder or even just a wicked hangover, animations can make them sick or worse–it goes beyond simple aesthetics to become a safety issue.

Fortunately, this is pretty easy to address using the prefers-reduced-motion media query (only on OSX and iOS Safari currently):

@media (prefers-reduced-motion) {
// do stuff
}

To toggle animations once this media query is in place, users can go to their system preferences and toggle "reduce motion".

I have a PR ready to submit with this issue.

[daneden]

Thanks for taking this on @marcysutton!