Add WindingOrder, more RenderState work
Upgrade array syntax
RenderState WIP
Merge branch 'WIP' of github.com:tokyovigilante/CesiumKit into WIP

Conflicts:
	CesiumKit/Core/Credit.swift
	CesiumKit/Core/Rectangle.swift
	CesiumKit/Core/TerrainProvider.swift
	CesiumKit/Renderer/Context.swift