title: passing parameter to ember in iframe
body: <p>What is the best practice to passing parameter to ember.js from another application.
  For example, I need click on link in main page and pass parameter to ember in iframe. 
  I done it through cookies, and check value in loop, but it's a not good practice.</p>
  
  <pre><code> setInterval(function(){
        Ember.$.getJSON('/url'+Ember.$.cookie("id")).then(function(response){...});
          }, 500);
  </code></pre>