fix windows color (adding color for later Win10 versions)

.# Discussion

This fixes Windows color support, turning it off when not supported, and enabling Win10
display of color when possible. The code enabling support will likely work, but may be
subject to change or improvement when [colored/PR#47](colored-rs/colored#47)
is merged.

Author: rivy

Diff for: Cargo.toml

@@ -34,6 +34,7 @@ num_cpus = "1.8.0"
 pad = "0.1.4"
 walkdir = "2.1.3"
 regex = "1.0"
+ansi_term = "0.11.0"
 
 [dependencies.clap]
 features = ["yaml"]

Diff for: src/main.rs

@@ -1,6 +1,9 @@
 #[macro_use]
 extern crate clap;
 
+#[cfg(target = "windows")]
+extern crate ansi_term;
+
 extern crate colored;
 extern crate liboskar;
 
@@ -28,6 +31,15 @@ fn main() {
         .setting(AppSettings::SubcommandRequired)
         .get_matches();
 
+    #[cfg(not(target = "windows"))]
+    let color_ok = true;
+    #[cfg(target = "windows")]
+    let color_ok = !ansi_term::enable_ansi_support().is_ok();
+
+    if !color_ok {
+        colored::control::set_override(false);
+    }
+
     // TODO this should install manpages?
     if let Some(x) = matches.subcommand_matches("update") {
         let force = x.is_present("force");