ropensci/rcrossref — pull request #19 by noamross (2014-07-05 22:04:30+00:00)
Title: Adding option for plyr-style progress bar in cr_cn

This is useful when pulling thousands of DOIs.

Per usual, I have not built the `.Rd` file. (How do we include roxygen config in the package so that mine matches yours when I build it?)

I'm happy to extend this to other functions in the package if it's desired.