cache: bundler

rvm:
  - 1.9
  - 2.0
  - 2.1
  - 2.2
  - 2.3.0

script: bundle exec rake

notifications:
  email: false

sudo: false

git:
  depth: 10

cache: bundler

rvm:
  - 1.9
  - 2.0
  - 2.1
  - 2.2
  - 2.3.0
  - 2.4.1

script: bundle exec rake

notifications:
  email: false

sudo: false

git:
  depth: 10

Add Ruby 2.4.1 to the Travis build matrix
Add Ruby 2.4.1 to the Travis build matrix

We may as well have the most recent version of Ruby in here as well.
