jcubic/jquery.terminal — pull request #119 by AustP (2013-08-21 21:05:48+00:00)
Title: Making greetings option actually allow function instead of string

In the docs it says:
greetings [string|function(callback)] — default is set to JQuery Terminal Singnature. You can set it to string or function (like prompt) with callback argument which must be called with your string.

I just added the code that allowed you to use a callback.