chore(package): update lint-staged to version 6.1.0

Closes #7

Author: greenkeeper[bot]

package.json

@@ -37,7 +37,7 @@
     "eslint-config-prettier": "^2.3.0",
     "husky": "^0.14.3",
     "jest": "^21.0.0",
-    "lint-staged": "^4.0.3",
+    "lint-staged": "^6.1.0",
     "prettier": "^1.5.3"
   },
   "dependencies": {