.travis.yml in crono-1.0.0 vs .travis.yml in crono-1.0.1

@@ -4,12 +4,17 @@
   - osx
 rvm:
   - 2.0.0
   - 2.1.7
   - 2.2.3
+  - 2.3.1
+matrix:
+  exclude:
+    - rvm: 2.3.1
+      os: osx
 notifications:
   webhooks:
     urls:
       - https://webhooks.gitter.im/e/907e95dada362be2a13c
     on_success: change  # options: [always|never|change] default: always
     on_failure: always  # options: [always|never|change] default: always
-    on_start: false     # default: false
+    on_start: never     # options: [always|never|change] default: always