chore(package): update nyc to version 11.1.0 (#121)

Author: greenkeeper[bot]

package.json

@@ -22,7 +22,7 @@
     "coveralls": "^2.11.16",
     "cross-env": "^3.1.4",
     "mocha": "^3.2.0",
-    "nyc": "^11.0.2",
+    "nyc": "^11.1.0",
     "pmock": "^0.2.3",
     "standard": "^9.0.2",
     "standard-version": "^4.0.0"