title: Import custom library in ember-cli
body: <p>I have <code>web app</code> and <code>Ember app</code> in iframe. I want to import custom library from <code>web app</code> to <code>ember app</code> like global variable. Library look like object with function:</p>
  
  <pre><code>var helpers = {
      helper1: function() {},
      helper2: function() {}
  };
  </code></pre>
  
  <p>Library working with sockets and will the same for both applications.</p>
  
  <p>I wrote:</p>
  
  <pre><code>app.import("./../../../public/scripts/js-helpers.js"); //file located in web app 
  </code></pre>
  
  <p>I can't access variable <code>helpers</code> in project and ember-cli copy folder <code>public</code> into their working folder. Sorry if question is stupid, I can't understand <code>ember-cli</code> import principles. </p>