rvm:
  - 2.0.0
  - 2.1.0
  - 2.1.1
  # - 2.2.1
  # - 2.3.0
  - jruby-19mode
before_install:
 - sudo apt-get update
 - sudo apt-get install libicu-dev

rvm:
  - 2.0.0
  - 2.1.0
  - 2.1.1
  - 2.2.1
  - 2.3.0
  - jruby-19mode
before_install:
 - sudo apt-get update
 - sudo apt-get install libicu-dev

Put back MRI 2.2 and 2.3 in Travis CI
Put back MRI 2.2 and 2.3 in Travis CI

The underlying issue that had led to the deactivation
of these versions of Ruby was Issue #158, which was solved
by PR #193.
