.travis.yml in hashie-2.1.2 vs .travis.yml in hashie-3.0.0

@@ -1,15 +1,16 @@
 language: ruby
+
 rvm:
   - ruby-head
   - 2.1.1
   - 2.1.0
   - 2.0.0
   - 1.9.3
   - jruby-19mode
   - jruby-head
-  - rbx-2.1
-  - rbx-2.2
+  - rbx-2
+
 matrix:
   allow_failures:
     - rvm: ruby-head
     - rvm: jruby-head