.travis.yml in vishnu-1.2.2 vs .travis.yml in vishnu-2.0.0

@@ -1,5 +1,8 @@
 language: ruby
 rvm:
-  - 1.9.3
-  - 2.0.0
-  - 2.2.0
+  - '2.0.0'
+  - '2.1.8'
+  - '2.2.4'
+  - '2.3.0'
+  - rbx
+script: bundle exec rspec