.travis.yml in capybara-screenshot-diff-0.2.1 vs .travis.yml in capybara-screenshot-diff-0.3.0

@@ -1,12 +1,11 @@
 language: ruby
 rvm:
+  - jruby-9.1.6.0
+  - 2.3.3
+  - 2.2.6
+  - 2.1.9
   - jruby-head
-  - jruby-9.1.2.0
-  - jruby-9.1.5.0
-  - 2.3.1
-  - 2.2.5
-  - 2.1.8
   - ruby-head
 before_install: gem query -i -n ^bundler$ >/dev/null || gem install bundler
 
 env:
   - JRUBY_OPTS="--dev --debug"