Implementation of OAuth 2.0

I have to implement the OAuth 2.0 in API call.

API call means am Developing an API  so I want to make secure it with OAuth 2.0, so for that I need help.

So am requesting you all friends to please share you views on this.

Am using PHP Kohana framework so if the posts belongs to this framework then it will be much help full to me.

Please reply you posts and views in the  comments so that I can track and view all.

Thanks for you support....

Image is taken from OAuth2