Hi, I’m here again.
This time, I connected my LinkIt Smart 7688 Duo to Cayenne, is similar to connect an Arduino Yun, but first you have to enable Bridge on the LinkIt. Cayenne has native support for Yun 
Project on Community:
Hackster.io:
Connecting LinkIt Smart 7688 Duo to Cayenne - Hackster.io
Instructables:
Connecting LinkIt Smart 7688 Duo to Cayenne : 7 Steps (with Pictures) - Instructables
Don’t forget that in Hackster now is live the contest:
The Future of Smart Home and Office is Here!
(The Future of Smart Home and Office is Here! - Hackster.io) using LinkIt Duo 