.travis.yml in fiddle-1.0.0.beta1 vs .travis.yml in fiddle-1.0.0.beta2

@@ -1,5 +1,5 @@
 sudo: false
 language: ruby
 rvm:
-  - 2.5.0
-before_install: gem install bundler -v 1.14.6
+  - ruby-head
+before_install: gem install bundler