chore(package): update del to version 2.2.2

Author: greenkeeperio-bot

package.json

@@ -22,7 +22,7 @@
     "babel-preset-react": "6.11.1",
     "babel-register": "6.11.6",
     "babel-runtime": "6.11.6",
-    "del": "2.2.1",
+    "del": "2.2.2",
     "eslint-config-standard": "5.3.5",
     "eslint-config-standard-jsx": "2.0.0",
     "eslint-config-standard-react": "3.0.0",