.travis.yml in chunky_png-1.2.6 vs .travis.yml in chunky_png-1.2.7

@@ -1,11 +1,16 @@
 language: ruby
+script: bundle exec rake
 rvm:
   - 1.8.7
   - 1.9.2
+  - 1.9.3
   - ruby-head
   - ree
   - rbx-18mode
   - rbx-19mode
   - jruby-18mode
   - jruby-19mode
-
+matrix:
+  allow_failures:
+    - rvm: rbx-19mode
+    - rvm: ruby-head