Add Ruby 2.4.0 to Travis CI.

junaruga · junaruga · commit 47e33e5b96b3 · 2017-02-01T20:42:23.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -2,6 +2,7 @@ sudo: false
 
 matrix:
   include:
+    - rvm: 2.4.0
     - rvm: 2.3.1
     - rvm: 2.2
     - rvm: 2.1
