install ts-node and nodemon

Author: tianyong90

packages/vue-markdown-loader/package.json

@@ -66,8 +66,10 @@
     "jest": "^24.7.1",
     "lint-staged": "^8.0.4",
     "listr": "^0.14.1",
+    "nodemon": "^1.19.1",
     "prettier": "^1.14.3",
     "ts-jest": "^24.0.2",
+    "ts-node": "^8.2.0",
     "tslint": "^5.11.0",
     "typescript": "^3.4.5"
   }