add doc for new param, custom-toggle
add doc for new param, custom-toggle

bomsy/adapt-strap,zpzgone/adapt-strap,Adaptv/adapt-strap,nealrosen/adapt-strap,nealrosen/adapt-strap,aol/adapt-strap,zpzgone/adapt-strap,Adaptv/adapt-strap,aol/adapt-strap,sthWrong/adapt-strap,sthWrong/adapt-strap,bomsy/adapt-strap