Adds configuration back

Author: leightonthomas

src/Vivait/StringGeneratorBundle/DependencyInjection/Configuration.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace Vivait\StringGeneratorBundle\DependencyInjection;
+
+use Symfony\Component\Config\Definition\Builder\TreeBuilder;
+use Symfony\Component\Config\Definition\ConfigurationInterface;
+
+class Configuration implements ConfigurationInterface
+{
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getConfigTreeBuilder()
+    {
+        $treeBuilder = new TreeBuilder();
+        $rootNode = $treeBuilder->root('vivait_string_generator');
+
+        $rootNode
+            ->fixXmlConfig('generator')
+            ->children()
+                ->arrayNode('generators')
+                    ->useAttributeAsKey('class')
+                        ->prototype('scalar')
+                    ->end()
+                ->end()
+            ->end();
+
+        return $treeBuilder;
+    }
+}