code: func (p *Paths) initAppExecutable(os, appName string) {
  	switch os {
  	case "darwin":
  		if appName == "" {
  			appName = "Electron"
  		}
  		p.appExecutable = filepath.Join(p.electronDirectory, appName+".app", "Contents", "MacOS", appName)
  	case "linux":
  		p.appExecutable = filepath.Join(p.electronDirectory, "electron")
  	case "windows":
  		p.appExecutable = filepath.Join(p.electronDirectory, "electron.exe")
  	}
  }
docs: // initAppExecutable initializes the app executable path