Merge pull request #9 from Martin819/master

Update Travis Notifications and disable sending email notifications
diff --git a/.travis.yml b/.travis.yml
index b7434c7..7852407 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,6 +31,8 @@
   - test ! -e .kitchen.yml || bundle exec kitchen test -t tests/integration
 
 notifications:
+  on:
+    branch: master
   webhooks:
     urls:
       - https://webhooks.gitter.im/e/6123573504759330786b