fix(check-param-names): ensure polyfilling Object.entries for Node 6

Author: brettz9

package.json

@@ -10,6 +10,7 @@
     "flat-map-polyfill": "^0.3.8",
     "jsdoctypeparser": "5.0.1",
     "lodash": "^4.17.15",
+    "object.entries-ponyfill": "^1.0.1",
     "regextras": "^0.6.1"
   },
   "description": "JSDoc linting rules for ESLint.",

src/rules/checkParamNames.js

@@ -1,5 +1,11 @@
+import entries from 'object.entries-ponyfill';
 import iterateJsdoc from '../iterateJsdoc';
 
+/* istanbul ignore next */
+if (!Object.entries) {
+  Object.entries = entries;
+}
+
 const validateParameterNames = (targetTagName : string, functionParameterNames : Array<string>, jsdoc, jsdocNode, utils, report) => {
   if (!jsdoc || !jsdoc.tags) {
     return false;