Go to "Add Project" on the left side and add this project. This will automatically setup the webhooks for you.
Click "Start Building" and you'll see it fail because by default it will kick off a build on your master branch, which doesn't have this config file yet.
To onboard:
Let me know if you have any questions.
By the way, the build on CircleCI runs in ~8-10 seconds. Way faster than the 1 minute Travis took.
NOTE: I didn't remove .travis.yml in this PR, I figure I'll let you handle that if you decide you like this better.