uprade webpack-dev-server

Author: vinikira

package.json

@@ -28,8 +28,8 @@
         "vue-loader": "^14.1.0",
         "vue-template-compiler": "^2.5.13",
         "webpack": "^3.10.0",
-        "webpack-dev-server": "^2.11.1",
-        "eslint": "^4.6.1",
+        "webpack-dev-server": ">=3.1.11",
+	"eslint": "^4.6.1",
 	"eslint-config-standard": "^10.2.1",
 	"eslint-plugin-import": "^2.7.0",
 	"eslint-plugin-node": "^5.1.1",