Use ruby 2.1.4 – our current preferred version
Merge pull request #258 from alphagov/bump-ruby-version

Use ruby 2.1.4 – our current preferred version
Revert "Use ruby 2.1.4 – our current preferred version"

This reverts commit 5b6f1ac90178a0f76cbfc2f245cd337daa8e49f1.

Our CI is currently on lucid and doesn't have a 2.1.4 rbenv package.
Merge commit 'c018e451fdac51757654fb9abf992d40bd27dc6a' into HEAD