sudo: false
language: ruby
rvm:
  - 2.4.0
before_install: gem install bundler -v 1.14.3

sudo: false
language: ruby
rvm:
  - 2.3.0
  - 2.4.0
  - 2.5.0
before_install: gem install bundler -v 1.6.1

Add Ruby 2.3 & 2.5 and update bundler version in TravisCI config
Add Ruby 2.3 & 2.5 and update bundler version in TravisCI config
