title: Shopify bulk file upload to assets
body: <p>I wanted to upload my previous theme on shopify, which is a 401mb zip file. But the shopify only allows 50mb max upload. So I unzipped my theme, then moved away some files from their asset folder, making the theme lighter. Then rezipped it, and uploaded it.</p>
  
  <p>Now, I have successfully uploaded the theme. I need to upload all 300+ images that were moved from their asset files back to the uploaded theme. How do I do a bulk upload on the assets?</p>