language: ruby

rvm:
- ruby-head
- 2.3.0
- 2.2
- 2.1
addons:
  apt_packages:
    libmagic-dev
script:
  - bundle exec parallel_rspec spec

language: ruby

rvm:
- ruby-head
- 2.4.0
- 2.3.3
- 2.2.6
- 2.1.10
addons:
  apt_packages:
    libmagic-dev
script:
  - bundle exec parallel_rspec spec

Add test on ruby 2.4
Add test on ruby 2.4

Also specify all latest minor version for all other rubies.
