Display "build" button on Github repo

Question

I have noticed on a few Github repositories (like this one) that you can have various images show on the main page of your repository. The image that I would like to show up on my repo is called the "build" button. The "build" button shows whether or not all your tests are passing or not. I would like to have this feature on my repo to prove that my code is passing all the unit tests I've written.

Some extra info:

• I use Travis CI to run all my tests
• The image I'm after looks like this: (note the image I want displayed is in the red box I've highlighted)

Answer 1

It's part of their README.md file, just take a look at the raw source code to see how to embed it... https://raw.github.com/Payum/Payum/master/README.md