added fulltext pkg slug in readme, ropensci/docs_private#164
Merge pull request #19 from kbroman/master

Attempt to avoid problems on CRAN if no arXiv connection
Merge pull request #20 from kbroman/master

Remove the "BuildVignettes: no" from the DESCRIPTION file
README.md: add alt text to ropensci footer image
README.md: More detail in alt text for build status icons
bump version to 0.5.7
Fix conflict in README.md