title: Index.js.map file missing when starting an angular-cli app in iPad-simulator
body: <p>When starting an angular-cli project, version <code>"1.0.0-beta.22-1"</code> in the iPad simulator it throws an error because of a missing <code>index.js.map</code> file. I can start the app in any other browser outside of the simulator, even in <code>Safari</code>.</p>
  
  <p>angular-cli does not generate any <code>index.js.map</code> file.</p>
  
  <p><strong>Question:</strong> Any ideas how I can solve this problem? Many Thanks!</p>