Test with Ruby 2.6

n-rodriguez · n-rodriguez · commit b4856f8aa4a1 · 2018-12-28T16:52:13.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -2,6 +2,7 @@ language: ruby
 cache: bundler
 sudo: required
 rvm:
+  - 2.6.0
   - 2.5.3
   - 2.4.5
   - 2.3.8
