Support dynamic rules for array items

Author: alyyousuf7

lib/revalidator.js

@@ -325,7 +325,12 @@
             var nestedErrors;
             for (var i = 0, l = a.length; i < l; i++) {
               nestedErrors = [];
-              validateProperty(object, a[i], property, e, options, nestedErrors);
+              var newE = e;
+              if (typeof e === 'function') {
+                newE = e(a[i]);
+              }
+
+              validateProperty(object, a[i], property, newE, options, nestedErrors);
               nestedErrors.forEach(function (err) {
                 err.property =
                   (property ? property + '.' : '') +