chore(package): update nyc to version 14.1.0

Closes #14

Author: greenkeeper[bot]

package.json

@@ -52,7 +52,7 @@
     "eslint": "^4.5.0",
     "eslint-config-airbnb": "^17.0.0",
     "eslint-plugin-import": "^2.7.0",
-    "nyc": "^11.1.0"
+    "nyc": "^14.1.0"
   },
   "files": [
     "lib/",