DSL directive project instead of xcodeproj

[mrackwitz]

• The directive to specify a project is called xcodeproj.
• The directive to specify a workspace is called workspace.
• The construct to declare a target is called target.

But all those are based on artifacts created with or for Xcode. I think that's one of the most counter-intuitive things in the current DSL. I'd love when we could fix that, before we "finalize" the DSL for 1.0.

[orta]

I'm 👍 with this, makes sense. As long as we let people know about the change when running pod install