Animation skips frames on resume.

[BenjaminDRichards]

Per user (Darryl M's comment)[http://www.kiwijs.org/examples/pausing-and-resuming/], it seems Kiwi.Animations.Animation.resume() does not behave properly. It doesn't reset the timing properties, so the animation immediately skips several loops and hits the frame it would have hit without pausing.

A simple fix; we probably just need to tie it into the play() functionality.