Add automatic rebuilds on file changes

README.md

@@ -3,6 +3,11 @@
 
 ```bash
 $ npm install
-$ npm run build
+$ npm run watch # Triggers auto rebuilds of files in src/
+```
+
+And in another terminal start the server
+
+```bash
 $ npm start
 ```

package.json

@@ -21,9 +21,11 @@
   "dependencies": {
     "ecstatic": "^1.4.0",
     "handlebars": "^4.0.5",
+    "nodemon": "^1.9.1",
     "remarkable": "^1.6.2"
   },
   "scripts": {
-    "build": "node ./scripts/build.js"
+    "build": "node ./scripts/build.js",
+    "watch": "nodemon -w src -e md,hbs -x npm run build"
   }
 }