Merge pull request #1837 from ehuss/serve-info

Always show the "serving on" info for `mdbook serve`.

src/cmd/serve.rs

@@ -102,9 +102,10 @@ pub fn execute(args: &ArgMatches) -> Result<()> {
         serve(build_dir, sockaddr, reload_tx, &file_404);
     });
 
-    if open_browser {
     let serving_url = format!("http://{}", address);
     info!("Serving on: {}", serving_url);
+
+    if open_browser {
         open(serving_url);
     }