Add example usage in JsonIteratorTest#goThroughIterator

Author: EtienneLamoureux

tests/Iterators/JsonIteratorTest.php

@@ -75,6 +75,7 @@ protected function goThroughIterator($iterator) {
         foreach ($iterator as $parsedJsonObject) {
             // Here you can do something with $parsedJsonObject as an array, 
             // has it had gone through json_decode already
+            //print_r($parsedJsonObject);
             $this->counter++;
         }
     }