Merge pull request #10 from Treblle/feature/config-tree-builder

Adding config changes to config tree builder

Author: JustSteveKing

src/DependencyInjection/Configuration.php

@@ -21,6 +21,7 @@ public function getConfigTreeBuilder()
             ->scalarNode('api_key')->end()
             ->booleanNode('debug')->end()
             ->arrayNode('masked')->scalarPrototype()->end()
+            ->arrayNode('ignore')->scalarPrototype()->end()
             ->end();
 
         return $treeBuilder;