.travis.yml in steering-1.2.0 vs .travis.yml in steering-1.3.0

@@ -1,8 +1,8 @@
 language: ruby
 rvm:
   - 1.8.7
   - 1.9.3
+  - 2.0.0
+  - 2.1
   - jruby-18mode
   - jruby-19mode
-  - rbx-18mode
-  - rbx-19mode