title: Angular 2 mock Http get() to return local json file
body: <p>What is the easiest way to mock the response returned by <code>Http</code> <code>get()</code> in Angular 2?</p>
  
  <p>I have local <code>data.json</code> file in my working directory, and I want <code>get()</code> to return response containing that data as a payload, simulating the rest api.</p>
  
  <p>Documents for configuring the <code>Backend</code> object for <code>Http</code> seemed somewhat obscure and overcomplicated for such a simple task. </p>