docs(readme): add build instructions

.pre-commit-config.yaml

@@ -1 +1 @@
-/nix/store/i4wcn83p1273vgv0nggpdbjqppq33aj7-pre-commit-config.json
+/nix/store/4wj49hvsmkannf285i53qczyjggvly5w-pre-commit-config.json

README.md

@@ -2,4 +2,19 @@
 
 The all-new (very experimental) MacGregor House website
 
+## Building
+
+To build, run
+
+`nix build .`
+
+For live preview, run
+
+`bash watch.sh` and
+`nix run nixpkgs#live-server`
+
+then navigate to the `src` directory.
+
+## Models
+
 ![A 3D model of MacGregor House](./assets/img/macg.png)

flake.nix

@@ -70,7 +70,6 @@
               nil.enable = true;
               statix.enable = true;
               markdownlint.enable = true;
-              mdsh.enable = true;
               typos.enable = true;
               check-merge-conflicts.enable = true;
               commitizen.enable = true;