.travis.yml in gon-5.0.4 vs .travis.yml in gon-5.1.0

@@ -1,9 +1,10 @@
 language: ruby
 rvm:
   - 1.9.3
   - 2.0.0
   - 2.1.0
+  - 2.1.1
   - jruby-19mode # JRuby in 1.9 mode
   - rbx
 matrix:
   allow_failures:
     - rvm: rbx