before_install:
 - gem install bundler
language: ruby
matrix:
    include:
    - rvm: "2.1.4"
    - rvm: "2.2.0"
    - rvm: "2.3.1"
    - rvm: "2.4.1"

before_install:
 - gem install bundler
language: ruby

os:
  - linux
  - osx

rvm:
  - "2.3.8"
  - "2.4.5"
  - "2.5.5"
  - "2.6.3"

Update Ruby and OS coverage for Travis
Update Ruby and OS coverage for Travis
