.travis.yml in fluent-plugin-mongo-0.7.2 vs .travis.yml in fluent-plugin-mongo-0.7.3

@@ -1,9 +1,15 @@
 rvm:
  - 1.9.2
  - 1.9.3
- - ruby-head
+ - 2.0.0
+ - 2.1.0
+ - rbx
 
 before_script:
   - git submodule update -i
 
-script: bundle exec rake test
+script: mongod=mongod bundle exec rake test
+
+matrix:
+  allow_failures:
+    - rvm: rbx