Sublime project file that includes a custom build system. The build.ps1 script will be selected by default when Sublime's auto build feature is enabled.

Sample.sublime-project

{
  "folders":
  [
    {
      "path": "/",
      "folder_exclude_patterns": ["js", "css"],
      "file_exclude_patterns": [".gitignore"]
    }
  ],
  "build_systems":
    [
      {
        "name": "CompileSassAndCoffeeScript",
        "cmd": ["%SystemRoot%\\system32\\WindowsPowerShell\\v1.0\\powershell.exe", "./build.ps1"],
        "shell": true,
        "working_dir": "${project_path}",
        "selector": "text,source"
      }
    ]
}