title: live linked image in spreadsheet
body: <p>I am sure this is a basic question but i am trying to create a project tracking document in google spreadsheets. The ideal scenario would be to have an image on our server that is used as a thumbnail in the spreadsheet. Then i would like to be able to overwrite that image and have it update on refresh in the spreadsheet.</p>
  
  <p>What would be the easiest way to achieve this.</p>