Test against latest Rubies (2.2.7 / 2.3.4 / 2.4.1) on TravisCI (#486)

highwide · ctran · commit d02ff2e12cb2 · 2017-07-13T12:26:59.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,9 +1,9 @@
 sudo: false
 language: ruby
 rvm:
-  - 2.2.5
-  - 2.3.0
-  - 2.4.0
+  - 2.2.7
+  - 2.3.4
+  - 2.4.1
   - ruby-head
 matrix:
   allow_failures:
