.travis.yml in redcarpet-render-seeing_is_believing-0.1.0 vs .travis.yml in redcarpet-render-seeing_is_believing-0.2.0

@@ -1,5 +1,7 @@
 sudo: false
 language: ruby
 rvm:
-  - 2.4.1
+  - 2.3
+  - 2.4
+  - 2.5
 before_install: gem install bundler -v 1.16.1