Upgrade to the 2018 edition

Cargo.toml

@@ -3,6 +3,7 @@ name = "du-dust"
 description = "A more intuitive version of du"
 version = "0.4.0"
 authors = ["bootandy <bootandy@gmail.com>", "nebkor <code@ardent.nebcorp.com>"]
+edition = "2018"
 
 documentation = "https://github.com/bootandy/dust"
 homepage = "https://github.com/bootandy/dust"

src/display.rs

@@ -2,7 +2,7 @@ extern crate ansi_term;
 
 use self::ansi_term::Colour::Fixed;
 use self::ansi_term::Style;
-use utils::Node;
+use crate::utils::Node;
 
 static UNITS: [char; 4] = ['T', 'G', 'M', 'K'];