FEATURE: Tweak README

README.md

@@ -1,15 +1,18 @@
-Yeebase.Graylog
-================
+# Yeebase.Graylog
 
 The Yeebase.Graylog Flow package logs your exceptions as well as single messages to a central Graylog server. This
 package also provides a simple backend to log message of Flows Logger classes to a Graylog server.
 
 It depends on the official GELF php package https://github.com/bzikarsky/gelf-php
 
-Installation & configuration
-------------
+## Installation & configuration
 
-Just add "yeebase/graylog" as dependency to your composer.json and run a "composer update" in your project's root folder.
+Just add "yeebase/graylog" as dependency to your composer.json and run a "composer update" in your project's root folder
+or simply execute:
+```
+composer require yeebase/graylog
+```
+from your project's root.
 
 Configure your Graylog Server:
 ```yaml
@@ -18,9 +21,9 @@ Yeebase:
     host: '127.0.0.1'
     port: 12201
     chunksize: 'wan'
-    skipStatusCodes: [403, 404]
 ```
 
+### Log exceptions
 
 Activate the exception handler and configure the connection to your graylog server in your Settings.yaml:
 
@@ -32,17 +35,50 @@ Neos:
         className: 'Yeebase\Graylog\Error\GraylogExceptionHandler'
 ```
 
-If you wish to log normal log messages to your Graylog server just use the provided GraylogLoggerInterface:
+*Note:* For `Development` context, the `Neos.Flow` package overrides this setting. Make sure to add this configuration
+in the right context Settings.yaml.
+
+#### Filter exceptions
+
+To skip certain exceptions from being logged you can either use the `skipStatusCodes` setting:
 
 ```yaml
+Yeebase:
+  Graylog:
+     # don't log any exceptions that would result in a HTTP status 403 (access denied) / 404 (not found)
+    skipStatusCodes: [403, 404]
+```
+
+Since version 2.1 you can alternatively use the `renderingGroups` Flow setting, i.e. to exclude certain Exception
+*classes* from being logged:
+
+```yaml
+Neos:
+  Flow:
+    error:
+      exceptionHandler:
+        className: 'Yeebase\Graylog\Error\GraylogExceptionHandler'
+        renderingGroups:
+          'accessDeniedExceptions':
+            matchingExceptionClassNames: ['Neos\Flow\Security\Exception\AccessDeniedException']
+            options:
+              logException: false
+```
+
+### Manual logging
+
+
+If you wish to log normal log messages to your Graylog server just use the provided `GraylogLoggerInterface`:
 
+```php
 use Neos\Flow\Annotations as Flow;
+use Yeebase\Graylog\Log\GraylogLoggerInterface;
 
 class SomeClass 
 {
     /**
      * @Flow\Inject
-     * @var Yeebase\Graylog\Log\GraylogLoggerInterface
+     * @var GraylogLoggerInterface
      */
     protected $graylogLogger;