add parameters to project

to include:
- statistics
- custom attributes

Author: Dickriven Chellemboyee

lib/Gitlab/Api/Projects.php

@@ -87,9 +87,21 @@ public function all(array $parameters = [])
      * @param int $project_id
      * @return mixed
      */
-    public function show($project_id)
+    public function show($project_id, array $parameters = [])
     {
-        return $this->get('projects/'.$this->encodePath($project_id));
+        $resolver = $this->createOptionsResolver();
+        $booleanNormalizer = function (Options $resolver, $value) {
+            return $value ? 'true' : 'false';
+        };
+        $resolver->setDefined('statistics')
+            ->setAllowedTypes('statistics', 'bool')
+            ->setNormalizer('statistics', $booleanNormalizer)
+        ;
+        $resolver->setDefined('with_custom_attributes')
+            ->setAllowedTypes('with_custom_attributes', 'bool')
+            ->setNormalizer('with_custom_attributes', $booleanNormalizer)
+        ;
+        return $this->get('projects/'.$this->encodePath($project_id), $resolver->resolve($parameters));
     }
 
     /**