language: ruby
rvm:
  - 2.1
  - 2.2
  - 2.3.3
  - 2.4.3
  - 2.5.0
gemfile:
  - gemfiles/rspec_3.3.gemfile
  - gemfiles/rspec_3.4.gemfile
  - gemfiles/rspec_3.5.gemfile
  - gemfiles/rspec_3.6.gemfile
  - gemfiles/rspec_3.7.gemfile
cache: bundler
sudo: false

language: ruby
rvm:
  - 2.1
  - 2.2
  - 2.3.3
  - 2.4.3
  - 2.5.0
gemfile:
  - gemfiles/rspec_3.3.gemfile
  - gemfiles/rspec_3.4.gemfile
  - gemfiles/rspec_3.5.gemfile
  - gemfiles/rspec_3.6.gemfile
  - gemfiles/rspec_3.7.gemfile
cache: bundler

Drop unused sudo: false directive
CI: Drop unused sudo: false directive