title: Present view controller modally over current context programmatically using swift
body: <p>I am using following code to present a view controller modally. I have changed presentation style to "Over current Context". It works fine on iOS 8 but screen gets black on os &lt; 8. I know Over Current Context is available only in iOS 8. My question is how can I achieve this in iOS 7.</p>
  
  <pre><code>let vc = self.storyboard.instantiateViewControllerWithIdentifier("markerView") as! MarkerViewController
  </code></pre>
  
  <p><code>self.presentViewController(vc, animated: false, completion: nil)</code></p>