Fix examples

examples/show.rs

@@ -3,7 +3,7 @@ extern crate libnotify;
 fn main() {
     // Init libnotify
     libnotify::init("myapp");
-    // Create a new notification and show it
+    // Create a new notification (doesn't show it yet)
     let n =
         libnotify::Notification::new("Summary", Some("Optional Body"), None);
     // Show the notification

src/lib.rs

@@ -6,7 +6,7 @@
 //! fn main() {
 //!     // Init libnotify
 //!     libnotify::init("myapp").unwrap();
-//!     // Create a new notification and show it
+//!     // Create a new notification (doesn't show it yet)
 //!     let n = libnotify::Notification::new("Summary",
 //!                                          Some("Optional Body"),
 //!                                          None);