Add querystring as as dependency

Author: avivace

package.json

@@ -72,6 +72,7 @@
     "postcss-import": "^11.0.0",
     "postcss-loader": "^2.0.8",
     "postcss-url": "^7.2.1",
+    "querystring": "^0.2.0",
     "request": "^2.87.0",
     "rimraf": "^2.6.0",
     "semver": "^5.3.0",