makeself and browser downloads

[John Quigley]

Many browsers treat makeself archives as text, and display them in the browser 
instead of allowing the user to save the file.  I've tried various different 
extensions (.sh.run, .sh.bin), but no luck fixing it.  

The makeself readme says to add a content type to the web server, but I don't 
have access to the server in question.  Is there other way to fix this?