checkRedundantParams, checkParamNames: add jsdoc check, etc

- fix several exceptions when validating files missing jsdoc tags

Closes #37
Closes #38

Author: Christopher Hiller

lib/rules/validate-jsdoc/check-param-names.js

@@ -10,6 +10,10 @@ module.exports.options = {
  * @param {Function} err
  */
 function validateCheckParamNames(node, err) {
+    if (!node.jsdoc) {
+        return;
+    }
+
     node.jsdoc.iterateByType(['param', 'arg', 'argument'],
         /**
          * tag checker

lib/rules/validate-jsdoc/check-redundant-params.js

@@ -10,6 +10,10 @@ module.exports.options = {
  * @param {Function} err
  */
 function validateCheckParamNames(node, err) {
+    if (!node.jsdoc) {
+        return;
+    }
+
     node.jsdoc.iterateByType(['param', 'arg', 'argument'],
         /**
          * tag checker
@@ -18,7 +22,7 @@ function validateCheckParamNames(node, err) {
          */
         function(tag, i) {
             // skip if there is dot in param name (object's inner param)
-            if (tag.name.value.indexOf('.') !== -1) {
+            if (tag.name && tag.name.value.indexOf('.') !== -1) {
                 return;
             }