callback results when getAccessToken

lib/oauth2.js

@@ -136,7 +136,7 @@ exports.OAuth2.prototype.getOAuthAccessToken= function(code, params, callback) {
       var access_token= results["access_token"];
       var refresh_token= results["refresh_token"];
       delete results["refresh_token"];
-      callback(null, access_token, refresh_token);
+      callback(null, access_token, refresh_token, results); // callback results =-=
     }
   });
 }