language: ruby
cache: bundler
rvm:
  - 2.2.0
  - 2.1.0
  - 2.0.0
  - 1.9.3
  - 1.8.7
before_install:
  - gem update bundler

language: ruby
cache: bundler
rvm:
  - 2.2.0
  - 2.1.0
  - 2.0.0
  - 1.9.3
before_install:
  - gem update bundler

Revert "Test with Ruby 1.8.7 on Travis CI."
Revert "Test with Ruby 1.8.7 on Travis CI."

This reverts commit 509491d2a86689cdbd5efb752609afb6adf156e6.
