Class names -> Type names

[rayfix]

No description provided.

[msheaver]

I really wish you would have kept 'Claas' here, as in: "Class, type and protocol names..." Although types can include classes, I think it will be clearer, especially for Swift noobs, to keep class in here. In fact, you might even want to include struts like so: "Class, struct, type and protocol names..."

Just my opinion here.

[rayfix]

@msheaver Thanks! I will take your comments into account in a future update. That said, this guide is for RayWenderlich tutorial and book writers and not necessarily for beginners. But if a minor change makes it more inclusive, I am all for it.