Update window example

examples/window.rs

@@ -1,22 +1,19 @@
 extern crate winit;
 
-fn resize_callback(width: u32, height: u32) {
-    println!("Window resized to {}x{}", width, height);
-}
-
 fn main() {
+    let events_loop = winit::EventsLoop::new();
+
     let window = winit::WindowBuilder::new()
         .with_title("A fantastic window!")
-        .with_window_resize_callback(resize_callback)
-        .build()
+        .build(&events_loop)
         .unwrap();
 
-    for event in window.wait_events() {
+    events_loop.run_forever(|event| {
         println!("{:?}", event);
 
         match event {
-            winit::Event::Closed => break,
+            winit::Event::WindowEvent { event: winit::WindowEvent::Closed, .. } => return,
             _ => ()
         }
-    }
+    });
 }