title: In Brunch.io, how do we run tests
body: <p>In an application generated by Brunch.io, how do we run tests? I would like to run them via the command line. </p>
  
  <p>For eg., the <a href="https://github.com/brunch/todos">todos</a> application has quite exhaustive test coverage. But its Cakefile is empty. When I run 'cake test', it doesn't do anything.
  Can someone please point me in the right direction on the setup work needed to run the tests (either on command line or on browser)?</p>