plugin: Link more than one third-party prinicpal with user.
plugin: Link more than one third-party prinicpal with user.

SkygearIO/skygear-server,SkygearIO/skygear-server,rickmak/skygear-server,SkygearIO/skygear-server,rickmak/skygear-server,rickmak/skygear-server,SkygearIO/skygear-server