Fixes for the version "1.0.0 - nightly" (with a remaining error)

[PifyZ]

Compilation error:

src/tile.rs:140:51: 140:51 help: add #![feature(int_uint)] to the crate attributes to silence this warning
src/app.rs:104:40: 104:52 error: use of undeclared type name `KeyPressArgs`
src/app.rs:104     pub fn key_press(&mut self, args: &KeyPressArgs) {
                                                      ^~~~~~~~~~~~

[coeuvre]

Thanks!