What is the purpose of a 'README' file in a web project?

A 'README' file serves as the primary source of documentation for a web project. Its purpose is to provide essential information regarding the project, including details about the project’s structure, its functionalities, and guidance on how to install, configure, and use the project effectively. It is typically one of the first files a user or developer will look at when they want to understand the project or start contributing to it.

This documentation often includes instructions for installation, deployment, and troubleshooting. It can also outline the project's objectives, features, and any relevant usage examples, making it an invaluable resource for both new users and experienced developers accessing the project for the first time.

Other choices, although relevant to some aspects of a project, do not particularly describe the primary role of a 'README'. While listing dependencies is important, it’s typically part of a broader documentation effort. Database setup and user permission management are critical technical tasks but are generally separate from the purpose of a 'README' file, which is more about providing an overview and helping users understand the project overall.