kongregate API in unity3d

Hello everyone. I have a bigger question... How can I connect my game with the kongregate API? I'll submic statistics from my game on kongregate. For exapmle a highscore board called "Levels completed"... I have 30 levels in my game and everything is finished, just uploading on kongregate. But I want to use the kongregate api to make highscore board. Can anyone help me? Maybe explain me step by step how to use the kongregate api? Can you also please post all scriptm I must use for this? Please help me :)