Clarify about the cleanup script

Author: talyssonoc

README.md

@@ -69,7 +69,7 @@ _Notice that the boilerplate comes with a small application for user management
 7. Run the application in development mode with `npm run dev`
 8. Access `http://localhost:3000/api/users` and you're ready to go!
 
-After playing a little bit with the boilerplate and before implementing a real application with it I recommend you to read at least the `Setup` and the `Organization and architecture` sections of our [Wiki](https://github.com/talyssonoc/node-api-boilerplate/wiki)
+After playing a little bit with the boilerplate and before implementing a real application with it I recommend you to read at least the `Setup` and the `Organization and architecture` sections of our [Wiki](https://github.com/talyssonoc/node-api-boilerplate/wiki). After that you'll be able to remove the example application files running `npm run cleanup`
 
 ## Aditional info: