Missing dependencies from the README

[fermuch]

I also had to install SOX, which isn't listed in the README. I don't know the install instructions for arch nor the others, since i'm on gentoo.

And I have several versions of lua. The requires weren't worcking, so I had to add require("luarocks.require") to boot.lua for it to load every package correctly.

[gamax92]

Well it doesn't actually need SOX, just that if it's installed it'll also use it, atleast it shouldn't crash iirc.

And thanks for the mention about luarocks.require, I'll look into that