Use latest, working version of ansi_term crate

Cargo.lock

@@ -2,7 +2,7 @@
 name = "exa"
 version = "0.1.0"
 dependencies = [
- "ansi_term 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ansi_term 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "git2 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "natord 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -12,7 +12,7 @@ dependencies = [
 
 [[package]]
 name = "ansi_term"
-version = "0.4.4"
+version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "regex 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",

Cargo.toml

@@ -7,7 +7,7 @@ authors = [ "ogham@bsago.me" ]
 name = "exa"
 
 [dependencies]
-ansi_term = "0.4.4"
+ansi_term = "0.4.5"
 getopts = "0.2.1"
 natord = "1.0.7"
 number_prefix = "0.2.3"