Every project comes with a README.md file which is used to provide helpful information to project users. 

Here are some things that you could include in your project's README.md:

• Instructions on how to use the app.
• A change log with details about app updates.
• Credits that show who worked on the project.
• Images can also be added if you like!

The README.md uses Markdown, which is a lightweight markup language that allows you to add formatting elements to plaintext text files.

How to edit a README.md file:

1. Open the project editor and make sure that the README.md file is selected in the file view on the left.
2. At the top of the editing pane, click the EDIT MARKDOWN button to reveal edit mode for the file.
3. Now you can start typing directly in the file.
4. When you are done, just click the PREVIEW MARKDOWN button again to see what the file will look like when another user views it.