Added `plyr` import to `get_publications` to avoid errors if it is not loaded directly.  `get_publications` now can download all publications at once and output them into the new format based on commit https://github.com/ropensci/neotoma/commit/959d39f7356a9ee22f4380e6b9811d2c50ba447a
Merge pull request #80 from SimonGoring/master

Added `plyr` import to `get_publications` to avoid errors if it is not l...