To build the Julia.app OS X application bundle:

1. First install Winston, and compile all the relevant libraries with Pkg.add("Winston"). The libraries are copied from ~/.julia/{Cairo,Tk} in here.
2. Run `make` here to create a self-sufficient julia distribution with Cairo and Tk.
3. Update the Julia.platypus profile file to reflect your local paths
4. Use Platypus (http://sveinbjorn.org/platypus) using the `Julia.platypus` profile to create the app bundle. 
5. Use dmgCreator (http://dmgcreator.sourceforge.net) with `Julia.dmged` to create the dmg file.

The `julia.icns` file provides the Julia icon, and the `script` file launches julia in a terminal.
