on intro screen the grow logo and the planet are appearing, custom class for introPlanetShape created and bezier path for planet is in that class, while it is created and added to the scene in the introScene
changed introPlanetShape from a subclass of SKShapeNode to an SKSpriteNode which is a node that draws a textured sprite, rather than drawing a custom path.
intro Planet is rotating correctly, now adding in the star scene behind it