.travis.yml in rack-heroku_env-0.1.0 vs .travis.yml in rack-heroku_env-0.1.1

@@ -1,5 +1,6 @@
+language: ruby
 rvm:
-  - 1.8.7
-  - 1.9.2
-  - 1.9.3
-  - jruby
+  - 2.0.0
+  - 2.1.1
+  - jruby-head-d20
+  - jruby-head-d21