title: Is any possible to add background picture to specify Eureka Form?
body: <p>I want add background to the form itself, but I can't figure out how to do it.</p>
  
  <pre><code>class ChallengeViewController: FormViewController {
  
      override func viewDidLoad() {
          super.viewDidLoad()
  
          //how to add background picture to the form???
          form +++
              TextRow("title").cellSetup {cell,row in
                  cell.textField.placeholder = "Task title"
              }
      }
  }
  </code></pre>
  
  <p>How to work around it??? thanks :)</p>