.travis.yml in diff_matcher-2.5.0 vs .travis.yml in diff_matcher-2.6.0

@@ -3,10 +3,19 @@
   - 1.8.7
 #  - 1.9.1  # travis no longer supports this https://twitter.com/#!/travisci/status/114926454122364928
   - 1.9.2
   - 1.9.3
   - rbx
-#  - rbx-19mode
+  - rbx-19mode
+  - rbx-2
   - jruby
   - ree
-#  - ruby-head
   - 2.0.0
+  - 2.1.1
+  - ruby-head
+
+matrix:
+  fast_finish: true
+  allow_failures:
+    - rvm: rbx
+    - rvm: rbx-19mode
+    - rvm: rbx-2