chore(package): update lint-staged to version 9.0.0

Closes #6

Author: greenkeeper[bot]

package.json

@@ -29,7 +29,7 @@
     "husky": "^0.14.3",
     "jest": "^23.5.0",
     "jest-cli": "^23.5.0",
-    "lint-staged": "^7.2.2",
+    "lint-staged": "^9.0.0",
     "nsp": "^3.2.1",
     "nvx": "^1.0.2",
     "prettier": "^1.14.2",