README.md updated

Author: dmitryakadiamond

README.md

@@ -139,6 +139,17 @@ output {
 ```
 
 ### MariaDB
-This is reportedly working, according to [@db2882](https://github.com/db2882) in issue #20. 
-No example configuration provided. 
-If you have a working sample, pull requests are welcome.
+  * Tested with Ubuntu 14.04.3 LTS, Server version: 10.1.9-MariaDB-1~trusty-log mariadb.org binary distribution
+  * Tested using https://downloads.mariadb.com/enterprise/tqge-whfa/connectors/java/connector-java-1.3.2/mariadb-java-client-1.3.2.jar (mariadb-java-client-1.3.2.jar)
+```
+input
+{
+    stdin { }
+}
+output {
+    jdbc {
+        connection_string => "jdbc:mariadb://HOSTNAME/DATABASE?user=USER&password=PASSWORD"
+	statement => [ "INSERT INTO log (host, timestamp, message) VALUES(?, ?, ?)", "host", "@timestamp", "message" ]
+    }
+
+}