title: How to pass parameters in pop method of ionic2
body: <p>I tried passing parameters in push method of ionic2. like this</p>
  
  <pre><code>this.nav.push(SecondPage, {
      thing1: data1,
      thing2: data2
  });
  </code></pre>
  
  <p>but is there any way to pass parameter in pop().</p>