Restore support for fade transition

[brodycj]

@hiroprotagonist this project is really great. I started using it for the second time in a project for a client and discovered that the fadeIn/fadeOut support had been removed. I was able to add the old fadeIn/fadeOut code to my application's CSS (by SCSS) but wonder if this support should be standard? Also clear directions on how to change the transition in an application, such as: add the following to your application's CSS to use fade transitions:

.ui-actionsheet-animateIn {
    -webkit-animation-name: actionsheet-open-fade;
}
.ui-actionsheet-animateOut {
    -webkit-animation-name: actionsheet-close-fade;
}