testing sub-section

README.md

@@ -44,4 +44,9 @@ If you are using a framework like Symfony or Laravel, then you already have one
 
 For a local development setup, you could just write the stats to a log. This writes the format exactly as it would be sent to DataDog.
 
-See [examples/log_datadog.php](examples/log_datadog.php) for how you might implement this.
+See [examples/log_datadog.php](examples/log_datadog.php) for how you might implement this.
+
+## Testing
+```shell
+composer test
+```