Consistently use quotes in travis.yml (#362)
Fix test-archetypes.sh to install before chdir (#362)
Install r-cran-lattice (#362)
Install r-base (#362)

- Install r-base to get all r-recommended packages
- Time installation tasks
Get /usr/bin/time (#362)
Fix environment variables (#362)
Fix erroneous echo redirect (#362) [skip ci]
Simplify R dep installation (#362)
Re-enable openjdk6 builds (#362)
Merge branch 'master' into feature/elehack-grapht-update