title: CORS with Firebase+IONIC2+Angularjs: No 'Access-Control-Allow-Origin' still exists
body: <p>I read all the suggestions and also followed the ionic suggestion how to overcome the CORS issue and get rid of the error: <em>Access-Control-Allow-Origin</em> with no success. I think I am missing the exact path conversion in proxies:</p>
  
  <p><strong>The URL I am trying to access in firebase is:</strong>
  <a href="https://firebasestorage.googleapis.com/v0/b/Test1-xxxxx.appspot.com/o/userData" rel="nofollow noreferrer">https://firebasestorage.googleapis.com/v0/b/Test1-xxxxx.appspot.com/o/userData</a>.</p>
  
  <p><strong>My local host URL is:</strong> localhost:8100.</p>
  
  <p>I don't understand how should I edit the <strong>path</strong> and <strong>proxyUrl</strong> settings in ionic.config.json:</p>
  
  <pre><code>{
  "name": "Test1", 
  "app_id": "", 
  "v2": true, 
  "typescript": true,
  
  "proxies": [{
  
    "path": "...",
  
    "proxyUrl": "..."
  
  }]}
  </code></pre>
  
  <p>I have tried many ways with no success, I am probably missing the point. I am new to Apps in general. I am starting with Web app using angular2+Ionic2</p>