chore(package): update npm-run-all to version 4.1.1

Closes #31

Author: greenkeeper[bot]

package.json

@@ -46,7 +46,7 @@
     "eslint": "^3.1.0",
     "eslint-watch": "^2.1.10",
     "lab": "^11.0.0",
-    "npm-run-all": "^3.0.0",
+    "npm-run-all": "^4.1.1",
     "onchange": "^3.0.0"
   }
 }