chore(package): update @nguniversal/express-engine to version 7.0.1

Closes #37

Author: greenkeeper[bot]

demo/package.json

@@ -45,7 +45,7 @@
     "@angularclass/hmr": "~2.1.3",
     "@compodoc/gulp-compodoc": "^0.0.9",
     "@nguniversal/common": "^6.0.0",
-    "@nguniversal/express-engine": "^6.0.0",
+    "@nguniversal/express-engine": "^7.0.1",
     "@nguniversal/module-map-ngfactory-loader": "^6.0.0",
     "@types/jest": "^23.3.1",
     "@types/node": "^10.5.8",