title: How to run `ionic serve` from Gulp script
body: <p>I am trying to setup end to end tests using protractor and gulp. So in order to execute my tests on the CI server I will need spin off a server which serves ionic my html/js/css.</p>
  
  <p>I am not entirely sure how ionic cli triggers the server, does it have some sort of task runner under the hood? If so, could I trigger it from the gulp script?</p>