bump hot-reload-api version

Author: yyx990803

package.json

@@ -38,7 +38,7 @@
     "postcss-load-config": "^1.1.0",
     "postcss-selector-parser": "^2.0.0",
     "source-map": "^0.5.6",
-    "vue-hot-reload-api": "^2.0.11",
+    "vue-hot-reload-api": "^2.1.0",
     "vue-style-loader": "^3.0.0",
     "vue-template-es2015-compiler": "^1.2.2"
   },