User dictionary location/name fix

Hi!
So I started using Palaver (which is great BTW), and noticed that at a lot of places inside the tutorials and in _the code that generates the directory in the user's home, you use the name "pavaler"_ (e.g.: the crearted directory will be ~/.pavaler.d, in the code references to ~/.pavaler.d). 

The code itself works, of course, but as this program is name Palaver as far as I know, it is a bit confusing. So what I did is _I modified the setup script and every references, so now the folder is called '.palaver.d' (eg.: ~/.palaver.d). I also modified the references in the tutorials/guides, so it stays consistent._