sudo: true
language: ruby
rvm:
  - 2.3.4
before_install: 
  - gem install bundler -v 1.15.3
services:
  - memcached

sudo: true
language: ruby
rvm:
  - 2.2
  - 2.3
  - 2.4
before_install: 
  - gem install bundler -v 1.15.3
services:
  - memcached

Test the gem with ruby versions 2.2+
Test the gem with ruby versions 2.2+
