travis.rb in danger-3.3.1

- old
+ new

@@ -1,6 +1,7 @@
 # http://docs.travis-ci.com/user/osx-ci-environment/
 # http://docs.travis-ci.com/user/environment-variables/
+require "danger/request_sources/github"
 
 module Danger
   # ### CI Setup
   # You need to edit your `.travis.yml` to include `bundle exec danger`. If you already have
   # a `script:` section then we recommend adding this command at the end of the script step: `- bundle exec danger`.