There's nothing here right now. You should change that.
Fork this repository and do something which demonstrates your ability to perform the job to which you are applying. Be succinct and have fun with it. A large part of designing applications and programming computers is creativity.
Do not submit an existing project. Do something new. It can include code you've worked on in the past (we all do that) but be original.
Be succinct. Your submission could be as simple as a single method, a single HTML page or even a single screen mock-up. Tailor your submission to the job for which you're submitting. We assume you'll spend a couple of hours at most on your submission. Because brevity is key, the little things do matter. We'll be looking at comments, code organization, etc as much or even more intently as the visual or functional output of your submission.
Good luck and have fun!