Update README.md

Author: binaryk

README.md

@@ -57,6 +57,13 @@ ServerTiming::setDuration('Running expensive task', function() {
 
 You can also use the Server-Timing middleware to only set textual information without providing a duration.
 
+## Publishing configuration file
+
+The configuration file could be published using:
+`php artisan vendor:publish server-timing-config`
+
+You can disable the middleware changing the `timing.enabled` configuration to false.
+
 ```php
 ServerTiming::addMetric('User: '.$user->id);
 ```