language: ruby
rvm:
  - 2.0.0
  - 2.1.8
  - 2.2.4
  - 2.3.0
script: bundle exec rake test
before_install:
  - sudo apt-get update -qq
  - sudo apt-get install webp

sudo: required
dist: trusty
language: ruby
rvm:
  - 2.0.0
  - 2.1.8
  - 2.2.4
  - 2.3.0
script: bundle exec rake test
before_install:
  - sudo apt-get update -qq
  - sudo apt-get install webp

Use trusty for Travis CI builds
Use trusty for Travis CI builds
