implemented println! macro

src/main.rs

@@ -11,9 +11,7 @@ static HELLO: &[u8] = b"Hello toto :3";
 // looks for a function named `_start` by default
 #[unsafe(no_mangle)]
 pub extern "C" fn _start() -> ! {
-    use core::fmt::Write;
-    vga_buffer::WRITER.lock().write_str("TOTOTO !!!! :3").unwrap();
-    write!(vga_buffer::WRITER.lock(), ", smoking cigarette in the shower when they get wet i just light another :{}", 3).unwrap();
+    println!("smoking cigarettes in the shower\nwhen they get wet i just light another\n:{}", 3);
 
     loop {}
 }