Prevent update notification from displaying when piping output.

Author: neogeek

bin/doxdox

@@ -17,7 +17,10 @@ const args = require('parse-cmd-args')(null, {
     'requireUserInput': true
 });
 
-updateNotifier({pkg}).notify();
+updateNotifier({
+    'defer': true,
+    pkg
+}).notify();
 
 if (args.flags['--version'] || args.flags['-v']) {