.travis.yml in hypernova-1.1.0 vs .travis.yml in hypernova-1.2.0

- old
+ new

@@ -1,7 +1,13 @@
 language: ruby
+sudo: false
+cache: bundler
 rvm:
-  - 1.9.3
+  - "1.9.3"
+  - "2.0"
+  - "2.1"
+  - "2.2"
+  - "2.3.3"
 before_install:
   - gem update bundler
 script:
   - bundle exec rspec