Maya and Unity integration question

Hello -

I need to create a dynamic ik chain in Maya for use in my game which i am building in Unity. I am wondering if unity 5 supports spline ik?

If not, then can anyone kindly instruct me how to go about creating a dynamic ik chain that is compatible in unity? Which export options do I need to pay attention too in Maya? I already know how to create the ik chain I need, but I need to make sure unity will play nice with it after importing it in, therefore, I need someone to help me who knows Maya. I don't know exactly which options to pay attention too at export.....Please advise. All help is appreciated. I love unity - its great! :D

Thanks, Joe