title: Store Firebase url in an external properties file?
body: <p>I want to put my Firebase url into an external text file and reference that value within my Javascript file.</p>
  
  <p>Currently in my files I have <code>var ref = new Firebase("https://&lt;YOUR-FIREBASE-APP&gt;.firebaseio.com");</code> but I want this: <code>var ref = new Firebase("https://" + fbAppName + ".firebaseio.com");</code></p>
  
  <p>This is so that I don't have to replace my Firebase app name with <code>&lt;YOUR-FIREBASE-APP&gt;</code> every time I push changes to my github account. I'd be easier to have the url referenced in an external file and just add that file to my git ignore.</p>