title: How to poll simple website for updates?
body: <p>I have a professor who randomly updates his website with homework due tomorrow and seems to expect us to check it every hour.</p>
  
  <p>This sounds like a job for a program.</p>
  
  <p>His website is simple and entirely html, not even any javascript.  How could I programatically detect any changes/updates to his website? </p>