Build Information Status Extension for Developers
With this extension, you can see provided additional source of information on GitHub pull request pages.
The said tool is based on a GitHub application and adds the real-time build status and log for every build job.
The enhanced status is always available when viewing pull request pages, but you can also jump to a build job log in Travis CI.
If ever you encountered issues and conflict or you have any suggestions, don't hesitate to send feedbacks.
Note: This doesn't own by GitHub and / or Travis CI but rather a personal project.