.travis.yml in google_web_translate-0.1.0 vs .travis.yml in google_web_translate-0.2.1

@@ -1,5 +1,7 @@
-sudo: false
-language: ruby
-rvm:
-  - 2.4.1
-before_install: gem install bundler -v 1.16.1
+sudo: false
+language: ruby
+rvm:
+  - 2.2
+  - 2.3
+  - 2.4
+before_install: gem install bundler -v 1.16.1