fix: update merge package to latest version after github security alert

Author: Harrison Ifeanyichukwu

.gitignore

@@ -1 +1,3 @@
-node_modules
+node_modules
+
+.nyc_output

package-lock.json

@@ -46,7 +46,7 @@
     "istanbul": "0.4.5",
     "jsdoc": "3.5.5",
     "jsdom": "11.10.0",
-    "jshint": "2.9.5",
+    "jshint": "2.9.6",
     "mocha": "5.1.1",
     "nyc": "11.8.0",
     "rimraf": "2.6.2",