title: Source folder is not a Java project when working with Heroku eclipse plugin
body: <p>I have set up a new project and hooked it up with Heroku:</p>
  
  <p><img src="https://i.stack.imgur.com/YZ8vX.png" alt="enter image description here"></p>
  
  <p>I'm able to make changes and upload them to my dyno at Heroku but when trying to add new classes in eclipse I get **Source folder is not a Java project **.
  Have I missed anything? </p>