.travis.yml in crono-1.0.3 vs .travis.yml in crono-1.1.0

@@ -1,17 +1,11 @@
 language: ruby
 os:
   - linux
   - osx
 rvm:
-  - 2.0.0
-  - 2.1.7
-  - 2.2.3
-  - 2.3.1
-matrix:
-  exclude:
-    - rvm: 2.3.1
-      os: osx
+  - 2.2.6
+  - 2.3.3
 notifications:
   webhooks:
     urls:
       - https://webhooks.gitter.im/e/907e95dada362be2a13c
     on_success: change  # options: [always|never|change] default: always