.travis.yml in negroku-2.4.2 vs .travis.yml in negroku-2.5.0

@@ -1,7 +1,9 @@
 ---
 language: ruby
 script: bundle exec rspec spec
 rvm:
+  - "1.9.3"
   - "2.0.0"
   - "2.1.0"
+  - "2.2.0"
 sudo: false