rvm:
  - 1.9.3
  - 2.0.0
  - 2.1.0
  - 2.1.1
  - 2.2.2
  - jruby-19mode
before_install:
 - sudo apt-get update
 - sudo apt-get install libicu-dev

rvm:
  - 2.0.0
  - 2.1.0
  - 2.1.1
  - 2.2.2
  - 2.3.0
  - jruby-19mode
before_install:
 - sudo apt-get update
 - sudo apt-get install libicu-dev

Drop 1.9.3 testing on Travis, add 2.3.0.
Drop 1.9.3 testing on Travis, add 2.3.0.
