first display run, simple-compd example

examples/simple_compd.rs

@@ -0,0 +1,15 @@
+use std::io;
+use wayland_server::display::Display;
+
+fn main() -> io::Result<()> {
+    let display = Display::new()?;
+
+    println!("Running wayland_display on {}", display.get_name());
+
+    display.run()?;
+
+    // clean-up
+    drop(display);
+
+    Ok(())
+}