chore(package): update eslint-watch to version 4.0.1

Closes #88

Author: greenkeeper[bot]

package.json

@@ -49,7 +49,7 @@
     "eslint-plugin-import": "^2.6.1",
     "eslint-plugin-json": "^1.2.0",
     "eslint-plugin-mocha": "^5.0.0",
-    "eslint-watch": "^3.1.2",
+    "eslint-watch": "^4.0.1",
     "husky": "^0.14.2",
     "istanbul": "^0.4.5",
     "mocha": "^5.0.0",