title: Load a .obj and .stl in Babylon.js
body: <p>I want to load a file, using Babylon.js, that has been uploaded by the user. I've looked around but can only find examples of loading babylon scene files.</p>
  
  <p>Is there a way of loading .obj and/or .stl files directly with Babylon.js without having to convert them to .babylon files?</p>
  
  <p>Thanks.</p>