language: ruby
sudo: false
before_script:
  - bundle update
cache: bundler
rvm:
  - 1.9.3
  - 2.0.0
  - 2.1
  - 2.2
  - ruby-head
  - jruby-19mode
  - jruby-head
  - rbx-2
matrix:
  allow_failures:
    - rvm: ruby-head
    - rvm: jruby-head

language: ruby
sudo: false
before_script:
  - bundle update
cache: bundler
rvm:
  - 1.9.3-p551
  - 2.0.0-p648
  - 2.1.8
  - 2.2.4
  - 2.3.0
  - ruby-head
  - jruby-19mode
  - jruby-9.0.4.0
  - jruby-head
  - rbx-2
matrix:
  allow_failures:
    - rvm: ruby-head
    - rvm: jruby-head

Update Travis CI Ruby versions.
Update Travis CI Ruby versions.

- Add 2.3.0.
- Add JRuby 9.0.4.0.
- Explicitly specify the latest version of each Ruby branch.
