language: ruby
rvm:
  - 1.8.7
  - 1.9.2
  - 1.9.3
  - 2.0.0
  - 2.1.1
  - ruby-head
  - jruby-18mode
  - jruby-19mode
  - jruby-head
  - rbx-2
  - ree
matrix:
  allow_failures:
    - rvm: ruby-head
    - rvm: jruby-head

language: ruby
rvm:
  - 1.8.7
  - 1.9.2
  - 1.9.3
  - 2.0.0
  - 2.1
  - ruby-head
  - jruby-18mode
  - jruby-19mode
  - jruby-head
  - rbx-2
  - ree
matrix:
  allow_failures:
    - rvm: ruby-head
    - rvm: jruby-head

Test using the latest Ruby 2.1 release.
Test using the latest Ruby 2.1 release.

Ruby is now using semantic versioning:
https://www.ruby-lang.org/en/news/2013/12/21/semantic-versioning-after-2-1-0/

Travis CI supports referencing ruby-2.1 following this update:
http://blog.travis-ci.com/2014-04-28-upcoming-build-environment-updates/
