Test against Ruby 1.9.3, 2.0.0, 2.1.8, 2.2.4, 2.3.0 and ruby-head on Travis CI
Test against Ruby 1.9.3, 2.0.0, 2.1.8, 2.2.4, 2.3.0 and ruby-head on Travis CI

emsk/romajic,emsk/romajic,emsk/romaji_cop,emsk/romajic,emsk/romaji_cop,emsk/romaji_cop