Added nix darwin to repo

nixos/darwin-configuration.nix

@@ -0,0 +1,23 @@
+{ config, pkgs, ... }:
+
+{
+  nix.settings.experimental-features = ["nix-command" "flakes"];
+
+  nixpkgs.config.allowUnfree = true;
+  environment.systemPackages = with pkgs; [];
+
+  # Auto upgrade nix package and the daemon service.
+  services.nix-daemon.enable = true;
+  nix.package = pkgs.nix;
+
+  # Create /etc/zshrc that loads the nix-darwin environment.
+  programs.zsh.enable = true;
+
+  users.users.jadenmaxwell = {
+    name = "jadenmaxwell";
+    home = "/Users/jadenmaxwell";
+  };
+
+  # Used for backwards compatibility.
+  system.stateVersion = 4;
+}