.travis.yml in hyperclient-0.7.2 vs .travis.yml in hyperclient-0.8.0

@@ -1,14 +1,19 @@
 rvm:
   - 1.9.3
   - 2.0.0
   - 2.1
   - 2.2
-  - rbx-2.2.10
+  - 2.3.0
+  - rbx-2
   - jruby-19mode
   - ruby-head
   - jruby-head
 
 matrix:
   allow_failures:
     - rvm: ruby-head
     - rvm: jruby-head
+    - rvm: rbx-2
+
+before_install:
+  - gem install bundler