Vendor dependencies for 0.3.0 release

vendor/ctrlc/examples/issue_46_example.rs

@@ -0,0 +1,26 @@
+use std::process;
+use std::sync::atomic::{AtomicUsize, Ordering};
+use std::sync::Arc;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let running = Arc::new(AtomicUsize::new(0));
+    let r = running.clone();
+    ctrlc::set_handler(move || {
+        let prev = r.fetch_add(1, Ordering::SeqCst);
+        if prev == 0 {
+            println!("Exiting...");
+        } else {
+            process::exit(0);
+        }
+    })
+    .expect("Error setting Ctrl-C handler");
+    println!("Running...");
+    for _ in 1..6 {
+        thread::sleep(Duration::from_secs(5));
+        if running.load(Ordering::SeqCst) > 0 {
+            break;
+        }
+    }
+}

vendor/ctrlc/examples/readme_example.rs

@@ -0,0 +1,22 @@
+// Copyright (c) 2015 CtrlC developers
+// Licensed under the Apache License, Version 2.0
+// <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT
+// license <LICENSE-MIT or http://opensource.org/licenses/MIT>,
+// at your option. All files in the project carrying such
+// notice may not be copied, modified, or distributed except
+// according to those terms.
+
+use ctrlc;
+use std::sync::mpsc::channel;
+
+fn main() {
+    let (tx, rx) = channel();
+
+    ctrlc::set_handler(move || tx.send(()).expect("Could not send signal on channel."))
+        .expect("Error setting Ctrl-C handler");
+
+    println!("Waiting for Ctrl-C...");
+    rx.recv().expect("Could not receive from channel.");
+    println!("Got it! Exiting...");
+}