Merge branch 'christopher16-json-unicode'

Author: christopher16

.gitignore

@@ -1 +1,2 @@
 /vendor/
+/.idea

src/Classes/Presenters/ChartPresenter.php

@@ -127,9 +127,9 @@ public function colors($series = [])
         return $this;
     }
 
-    public function credits($credits = 'false')
+    public function credits($credits = [])
     {
-        // $this->transform->credits = $credits;
+        $this->transform->credits = $credits;
         return $this;
     }