sudo: false
language: ruby
rvm:
- 2.0
- 2.1
- 2.2
- 2.3.3
- 2.4.0
env: COVERALL=1

before_install:
- gem install bundler

sudo: false
language: ruby
rvm:
- 2.0
- 2.1
- 2.2
- 2.3.3
- 2.4.0
env: COVERALL=1

before_install:
  - gem update --system
  - gem install bundler

Fix rainbow installation on CI
Fix rainbow installation on CI

Ref https://github.com/sickill/rainbow/issues/44#issuecomment-274412027
