language: ruby
rvm:
  - "1.9.3"
  - "2.0.0"
  - "2.1.2"
  - "2.3.0"

language: ruby
rvm:
  - "2.0.0"
  - "2.1.8"
  - "2.2.4"
  - "2.3.0"

Update Ruby stable versions on Travis CI 2.1.8 to 2.1.x 2.2.4 to 2.2.x 2.3.0 to 2.3.x kept 2.0.0, but soon need to remove it (EOL soon) removed 1.9
Update Ruby stable versions on Travis CI
2.1.8 to 2.1.x
2.2.4 to 2.2.x
2.3.0 to 2.3.x
kept 2.0.0, but soon need to remove it (EOL soon)
removed 1.9