chore(package): update fs-extra to version 5.0.0 (#110)

Update fs-extra to version 5.0.0 🚀

Author: greenkeeper[bot]

package.json

@@ -57,7 +57,7 @@
     "eslint": "^4.6.0",
     "eslint-config-airbnb-base": "^12.0.0",
     "eslint-plugin-import": "^2.7.0",
-    "fs-extra": "^4.0.1",
+    "fs-extra": "^5.0.0",
     "jasmine-fix": "^1.3.0"
   },
   "eslintConfig": {