We are planning to release MERN v2 within this week.
V2 has a different file structure. All the react code is separated into modules (Post, User, etc.) and will have corresponding actions, reducers, containers, child components, styles and tests for all of them. So, you probably have to create a new project and copy your files & restructure them into modules. It should be easy. If you bump into an issue, create an issue in Github. We will surely help you resolve it. :)