.travis.yml in perfectsched-0.8.10 vs .travis.yml in perfectsched-0.8.11

@@ -1,8 +1,15 @@
 rvm:
-  - 1.9.3
-  - 2.0.0
-  - 2.1.6
-  - 2.2.2
+  - 2.2.5
+  - 2.3.1
   - ruby-head
 
 script: "bundle exec rake spec"
+
+sudo: false
+
+matrix:
+  allow_failures:
+    - rvm: ruby-head
+
+notifications:
+  webhooks: http://td-beda.herokuapp.com/travisci_callback