language: ruby
env:
  - CXX=g++-4.8
rvm:
  - 2.0
  - 2.1
  - 2.2
  - 2.3.1
before_install:
  - gem install bundler -v 1.12.0
cache: bundler
addons:
  apt:
    sources:
      - ubuntu-toolchain-r-test
    packages:
      - g++-4.8

language: ruby
rvm:
  - 2.0
  - 2.1
  - 2.2
  - 2.3.1
matrix:
  include:
    - rvm: 2.2
      os: osx
dist: trusty
sudo: true
before_install:
  - gem install bundler -v 1.12.0
cache: bundler

Update and expand the Travis configuration
Update and expand the Travis configuration

Make Travis use Ubuntu Trusty for Linux builds and introduce an OS X
build.
