Merge pull request #64 from gvwilson/building-r
authorGreg Wilson <gvwilson@software-carpentry.org>
Fri, 24 Jun 2016 16:37:47 +0000 (12:37 -0400)
committerGitHub <noreply@github.com>
Fri, 24 Jun 2016 16:37:47 +0000 (12:37 -0400)
Only try building R files if there are some


Trivial merge