Update submit_datapackage_archive
Update submit_datapackage_archive

Update to add language about citing data packages in the article reference list.
rnathanday/dryad-repo,jimallman/dryad-repo,ojacobson/dryad-repo,rnathanday/dryad-repo,ojacobson/dryad-repo,ojacobson/dryad-repo,jamie-dryad/dryad-repo,jimallman/dryad-repo,mdiggory/dryad-repo,jamie-dryad/dryad-repo,jimallman/dryad-repo,jimallman/dryad-repo,mdiggory/dryad-repo,jimallman/dryad-repo,mdiggory/dryad-repo,rnathanday/dryad-repo,rnathanday/dryad-repo,ojacobson/dryad-repo,ojacobson/dryad-repo,jimallman/dryad-repo,rnathanday/dryad-repo,rnathanday/dryad-repo,jamie-dryad/dryad-repo,jamie-dryad/dryad-repo,ojacobson/dryad-repo,jamie-dryad/dryad-repo,mdiggory/dryad-repo,mdiggory/dryad-repo