.travis.yml in jellyfish-1.1.1 vs .travis.yml in jellyfish-1.2.0

@@ -1,15 +1,18 @@
 sudo: false
 language: ruby
-rvm:
-  - 2.0
-  - 2.1
-  - 2.2
-  - rbx
-  - jruby-9
 
-before_install:
-  - rvm get head
-  - rvm reload
-  - rvm use --install $TRAVIS_RUBY_VERSION --binary --latest
-install: 'bundle install --retry=3'
+install: 'gem install bundler; bundle install --retry=3'
 script: 'ruby -vr bundler/setup -S rake test'
+
+matrix:
+  include:
+    - rvm: 2.3
+    - rvm: 2.4
+    - rvm: 2.5
+    - rvm: ruby-head
+    - rvm: jruby
+      env: JRUBY_OPTS=--debug
+    - rvm: rbx
+
+  allow_failures:
+    - rvm: rbx