Warning of using CreateClass

[malanchito]

The warning you get on the console is: Accessing createClass via the main React package is deprecated, and will be removed in React v16.0. Use a plain JavaScript class instead. If you're not yet ready to migrate, create-react-class v15.* is available on npm as a temporary, drop-in replacement.
I have followed the link provided https://fb.me/react-create-class and checked every single deprecated writing example and have not found any match in the code.