scrm-r requires R version to be 3.1.* or higher

[shajoezhu]

Ubuntu users can update R by the following step.

1. Remove R. sudo apt-get remove r-base-core
2. Add entry deb http://cran.rstudio.com/bin/linux/ubuntu trusty/ to the source list /etc/apt/sources.list.
3. Then execute
   gpg --keyserver keyserver.ubuntu.com --recv-key E084DAB9, and followed by gpg -a --export E084DAB9 | sudo apt-key add - to add the key.
4. sudo apt-get update, upgrade, and then install r-base.

[paulstaab]

Version 1.3-3, which was release on CRAN today and will be available on the mirrors soon, now properly declares its dependency on R version greater than 3.1.0. I'm closing this issue.