Create a Renderer and copy over the Math library

Terrain/Renderer.swift

@@ -0,0 +1,23 @@
+//
+//  Renderer.swift
+//  Terrain
+//
+//  Created by Eryn Wells on 11/3/18.
+//  Copyright © 2018 Eryn Wells. All rights reserved.
+//
+
+import Cocoa
+import Metal
+import MetalKit
+
+class Renderer: NSObject, MTKViewDelegate {
+
+    func mtkView(_ view: MTKView, drawableSizeWillChange size: CGSize) {
+        print("Size of \(view.debugDescription) will change to \(size)")
+    }
+
+    func draw(in view: MTKView) {
+        // TODO.
+    }
+
+}