.travis.yml in virtus-0.2.0 vs .travis.yml in virtus-0.3.0

@@ -1,15 +1,17 @@
+language: ruby
 bundler_args: --without guard metrics
 script: "bundle exec rake spec"
 rvm:
   - 1.8.7
   - 1.9.2
   - 1.9.3
-  - ruby-head
-  - ree
   - jruby-18mode
   - jruby-19mode
   - rbx-18mode
-  # - rbx-19mode  # FIXME: uncomment when rbx 1.9 is more stable
+  - rbx-19mode
+  - ree
+  - ruby-head
+  - jruby-head
 notifications:
   email:
     - [e-mail]