Cannot animate SKNode objects.

[firatagdas]

Could you please add Sprite Kit support?

[u10int]

You should be able to use the key path property for animating non-supported properties as long as the parent object is a subclass of NSObject, which I think SpriteKit objects are: https://github.com/u10int/Kinetic#custom-properties

I'll looking into SpriteKit more once I get all the refactoring done for the 1.0 release.