access Input.GetButton key name

Hi!

I am again wondering how to access Input.GetButtons key name(string!)

For an example:

 private var str: String="Press "+Input.GetButton("Action").key.name+" to start!";

It should return: Press Space to start!

I just want to make sure that it automaticaly correct if user changes controls...

Have anyone made smthing like this one?

Thanks in advance!