Rotation on iOS 8

[william26]

Hi,

I'm using this lib to rotate pictures, and it seems that vendor prefixes for the CSS transform property are needed on Safari (iOs 8) to be able to preview the rotation correctly. This is also written on the Can I Use page linked in the README (http://caniuse.com/#feat=transforms2d).

Would it be possible to add the -webkit- and the -ms- to support Safari iOs 8 and IE 9 ?

I can make a PR if needed.

Thanks :)

[fengyuanchen]

As the jQuery will add these vendor prefixes to the Cropper automatically, I forgot to add these prefixes to the Cropper.js manually. Thank you for your reminder.