ropensci/aRxiv — pull request #24 by kbroman (2014-12-27 17:24:51+00:00)
Title: Attempting to deal with arXiv connection issues and CRAN

Had issues connecting to arXiv, which causes problems on CRAN.

- use an environment variable to set a timeout
- another environment variable allowing connection problem to result in a message not an error
- skip most tests on CRAN