sudo: false
language: ruby
rvm:
  - 2.0.0
  - 2.1.10
  - 2.2.7
  - 2.3.4
  - 2.4.1
  - ruby-head
before_install:
  - stty cols 160
  - gem install bundler -v 1.15.1

sudo: false
language: ruby
rvm:
  - 2.0.0
  - 2.1.10
  - 2.2.7
  - 2.3.4
  - 2.4.1
  - ruby-head
before_install:
  - stty cols 160
  - gem install bundler -v 1.15.4

Update bundler on Travis CI
Update bundler on Travis CI
