ShellBar is a standard application which accepts "shell scripts" as documents. Simply rename your ".sh" documents to ".shbar" documents. Open the .shbar document, doubleclicking on it, and the shellbar window will appear.
The script execution will start shortly, and when the end is reached, the progress bar will be at "100%" position, the semaphore lights will pass from yellow to green. And the application will quit. The window title bar and the descriptions will be extracted from the file name, giving generic informations.