You can create new files directly on GitHub in any repository you have write access to.
You can upload and commit an existing file to a repository on GitHub or by using the command line.
You can move a file to a different directory on GitHub or by using the command line.
You can edit files directly on GitHub in any of your repositories using the file editor.
You can rename any file in your repository directly in GitHub or by using the command line.
You can delete an individual file or an entire directory in your repository on GitHub.
To keep certain files from displaying in diffs by default, or counting toward the repository language, you can mark them with the linguist-generated attribute in a .gitattributes file.