Use easier readme example using channels

README.md

@@ -8,18 +8,19 @@ A simple easy to use wrapper around Ctrl-C signal.
 
 ## Example usage
 ```rust
-use std::sync::atomic::{AtomicBool, Ordering};
-use std::sync::Arc;
+use std::sync::mpsc::channel;
+use ctrlc;
 
 fn main() {
-    let running = Arc::new(AtomicBool::new(true));
-    let r = running.clone();
+    let (tx, rx) = channel();
+
     ctrlc::set_handler(move || {
-        r.store(false, Ordering::SeqCst);
+        tx.send(()).expect("Could not send signal on channel.")
     }).expect("Error setting Ctrl-C handler");
+
     println!("Waiting for Ctrl-C...");
-    while running.load(Ordering::SeqCst) {}
-    println!("Got it! Exiting...");
+    rx.recv().expect("Could not receive from channel.");
+    println!("Got it! Exiting..."); 
 }
 ```
 

examples/readme_example.rs

@@ -7,21 +7,17 @@
 // notice may not be copied, modified, or distributed except
 // according to those terms.
 
-use std::sync::atomic::{AtomicBool, Ordering};
-use std::sync::Arc;
-use std::thread;
-use std::time;
+use std::sync::mpsc::channel;
+use ctrlc;
 
 fn main() {
-    let running = Arc::new(AtomicBool::new(true));
-    let r = running.clone();
+    let (tx, rx) = channel();
+
     ctrlc::set_handler(move || {
-        r.store(false, Ordering::SeqCst);
-    })
-    .expect("Error setting Ctrl-C handler");
+        tx.send(()).expect("Could not send signal on channel.")
+    }).expect("Error setting Ctrl-C handler");
+
     println!("Waiting for Ctrl-C...");
-    while running.load(Ordering::SeqCst) {
-        thread::sleep(time::Duration::from_millis(10));
-    }
-    println!("Got it! Exiting...");
+    rx.recv().expect("Could not receive from channel.");
+    println!("Got it! Exiting..."); 
 }