Add documentation for  option
Add documentation for  option

inkling/Backbone-relational,matghaleb/Backbone-relational,goodwall/Backbone-relational,airbnb/Backbone-relational,matghaleb/Backbone-relational,codazzo/Backbone-relational,inkling/Backbone-relational,leeleo26/Backbone-relational,GerHobbelt/Backbone-relational,PaulUithol/Backbone-relational,lehresman/Backbone-relational,nikolas/Backbone-relational,PaulUithol/Backbone-relational,Feasul/Backbone-relational,BothMedia/Backbone-relational,nikolas/Backbone-relational,xcambar/Backbone-relational,goodwall/Backbone-relational,closeio/Backbone-relational,Feasul/Backbone-relational,closeio/Backbone-relational,leeleo26/Backbone-relational,xcambar/Backbone-relational