travis-ci/travis-build — pull request #213 by henrikhodne (2014-03-09 16:24:13+00:00)
Title: feat(rvm): use .ruby-version file if it exists for default Ruby

If there is a .ruby-version file in the repository and a Ruby version isn't specified (or it's default), it would make more sense to pick the version in .ruby-version than whatever we have set as default.

Close travis-ci/travis-ci#1984.