Example Sublime Text project file customized for SASS development. It changes the output directory for compiled SASS files to a css folder, which is excluded from the side bar.

SassExampleProject.sublime-project

{
    "folders": [{
        "path": "src",
        "folder_exclude_patterns": ["css"]
    }],
    "build_systems": [{
        "name": "Sass",
        "cmd": ["sass", "--update", "$file:${file_path}/../css/${file_base_name}.css"]
    }]
}