摘要：
JSONKit有两个warning。// array->isa = _JKArrayClass;// warningobject_setClass(array, _JKArrayClass); // 更正dictionary->isa = _JKDictionaryClass;// warningobject_setClass(dictionary, _JKDictionaryClass);// 更正原因isa已经被废弃了，所以请调用object_setClass()和object_getClass() 阅读全文
