Adds xdg-basedir dep

Author: jasonkarns

package.json

@@ -10,7 +10,8 @@
     "deglob": "^4.0.0",
     "get-stdin": "^7.0.0",
     "minimist": "^1.1.0",
-    "pkg-conf": "^3.1.0"
+    "pkg-conf": "^3.1.0",
+    "xdg-basedir": "^4.0.0"
   },
   "devDependencies": {
     "babel-eslint": "^10.0.2",