DOCS: sampler intro, ensembler intro
DOCS: sampler intro, ensembler intro

guillochon/MOSFiT,villrv/MOSFiT,bmockler/MOSFiT,guillochon/MOSFiT,bmockler/MOSFiT,mnicholl/MOSFiT,villrv/MOSFiT,guillochon/FriendlyFit,mnicholl/MOSFiT,mnicholl/MOSFiT,guillochon/MOSFiT