title: Swift UIToolbar positioning
body: <p>I have a <code>UIToolbar</code>, but I have no idea how to positioning it..</p>
  
  <p>I would add <code>UIBarButtonItems</code> to it, and positioning them. The toolbar showing up, but i can't change it size, and i can't position the buttons in it. </p>
  
  <pre><code>override func viewDidAppear(animated: Bool) {       
      self.navigationController?.setToolbarHidden(false, animated: true)
      self.navigationController?.toolbar.frame = CGRectMake(50, 50, 50, 50)
      self.navigationController?.toolbar.sizeToFit()
  
      let plusImg = UIImage(named: "navbar_icon-02.png")?.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal)        
      let plusButton = UIBarButtonItem(image: plusImg, style: UIBarButtonItemStyle.Plain, target: self, action: "postLeft:")        
      let filterButton = UIBarButtonItem(title: "Feed filter", style: UIBarButtonItemStyle.Plain, target: nil, action: nil)
      let leftButton = UIBarButtonItem(title: "Button 3 tst", style: UIBarButtonItemStyle.Plain, target: nil, action: nil)
  
      var toolbarButtons = [filterButton]
      toolbarButtons.append(plusButton)
      toolbarButtons.append(leftButton)
  
      self.toolbarItems = toolbarButtons
  }
  </code></pre>