chore(package): update webpack-dev-server to version 2.9.5

Closes #115

Author: greenkeeper[bot]

package.json

@@ -95,7 +95,7 @@
     "url-loader": "^0.6.1",
     "webpack": "2.3.3",
     "webpack-dev-middleware": "^1.12.0",
-    "webpack-dev-server": "2.9.3"
+    "webpack-dev-server": "2.9.5"
   },
   "engines": {
     "node": ">= 4.2.1 <= 6",