run webpack in watch mode

lib/utils/create_app.js

@@ -23,4 +23,8 @@ module.exports = function create_app(src, dest, routes, options) {
 	const main = template.replace('__routes__', code);
 
 	fs.writeFileSync(main_built, main);
+
+	// need to fudge the mtime, because webpack is soft in the head
+	const stats = fs.statSync(main_built);
+	fs.utimesSync(main_built, stats.atimeMs - 9999, stats.mtimeMs - 9999);
 };