Fix R note about undocumented parameter, genmodel_path, in h2o.download_mojo()
Fix R note about undocumented parameter, genmodel_path, in h2o.download_mojo()

h2oai/h2o-3,michalkurka/h2o-3,h2oai/h2o-dev,h2oai/h2o-3,h2oai/h2o-dev,michalkurka/h2o-3,h2oai/h2o-3,spennihana/h2o-3,michalkurka/h2o-3,h2oai/h2o-3,spennihana/h2o-3,spennihana/h2o-3,h2oai/h2o-dev,h2oai/h2o-dev,michalkurka/h2o-3,spennihana/h2o-3,h2oai/h2o-dev,h2oai/h2o-dev,h2oai/h2o-3,michalkurka/h2o-3,michalkurka/h2o-3,h2oai/h2o-3,michalkurka/h2o-3,spennihana/h2o-3,h2oai/h2o-dev,h2oai/h2o-3,spennihana/h2o-3,spennihana/h2o-3,h2oai/h2o-3