explain how to pass option to nested exposure
explain how to pass option to nested exposure

add a new section to explain how to pass additional option to nested expose and show how to retrieve new option in nested exposure
calfzhou/grape-entity,etehtsea/grape-entity,dan-corneanu/grape-entity,iangreenleaf/grape-entity,geniousli/grape-entity,dblock/grape-entity,ruby-grape/grape-entity,danhodge/grape-entity,marshall-lee/grape-entity,cakejelly/grape-entity,intridea/grape-entity,tyre/grape-entity,LeFnord/grape-entity