improved sobol docs
improved sobol docs

MarkAWard/optunity,MarkAWard/optunity,claesenm/optunity,MarkAWard/optunity,claesenm/optunity,MarkAWard/optunity,chrinide/optunity,chrinide/optunity,claesenm/optunity,claesenm/optunity,chrinide/optunity,chrinide/optunity