sudo: false
language: ruby
rvm:
  - 2.2.3
before_install: gem install bundler -v 1.13.6

sudo: false
language: ruby
cache: bundler
bundler_args: --quiet
rvm:
  - 2.1.10
  - 2.2.3
  - 2.3.1
before_install: gem install bundler -v 1.13.6

Test also against ruby 2.1/2.3 and cache bundled gems in Travis
Test also against ruby 2.1/2.3 and cache bundled gems in Travis
