"I've just released bashapp via github, which compiles a bash script into a binary program (C source) and creates the directory structure necessary to make it clickable in Finder. Here's the README:
I needed this to build a few service launch scripts that could be clicked on in Finder, as opposed to asking users to open a Terminal. It also provides simple script obfuscation via encryption, which can be handy if you need to distribute the program.
If you wanted to add icons, you can do so by adding the Info.plist file, and the .icns file to the Contents/Resources/ folder."