Merge pull request #230 from jc00ke/patch-1

CI with current rbx-2

Author: flori

.travis.yml

@@ -9,14 +9,12 @@ rvm:
   - 2.0.0
   - 2.1
   - ree
-  - rbx-18mode
-  - rbx-19mode
+  - rbx-2
   - jruby-18mode
   - jruby-19mode
   - ruby-head
 matrix:
   allow_failures:
-    - rvm: rbx-18mode
-    - rvm: rbx-19mode
+    - rvm: rbx-2
     - rvm: ruby-head
 script: "bundle exec rake"