fix(package): update pluralize to version 7.0.0

Closes #24

Author: greenkeeper[bot]

package.json

@@ -32,7 +32,7 @@
     "eslint": "^4.1.1",
     "eslint-json": "^2.0.0",
     "lodash": "^4.17.4",
-    "pluralize": "^5.0.0",
+    "pluralize": "^7.0.0",
     "requireindex": "~1.1.0",
     "yamljs": "^0.3.0"
   },