Snapchat said Saturday it is rebranding as Snap Inc. and has introduced its first hardware product, "Spectacles," sunglasses that contain what the company says is one of the smallest wireless video cameras in the world. Evan Spiegel, the CEO of the Venice, California-based company, said in a statement on Snap's website that the company was dropping "chat" from its name because it had expanded its products and services beyond its original app. "When we were just getting started it made sense to…