title: NSDateFormatter getting date nil with format 'MMM dd, yyyy HH:mm a'
body: <p>I have <code>let time = "Jun 08, 2015 11:27 PM"</code>, converting it to NSDate using following code </p>
  
  <pre><code>    let formatter = NSDateFormatter()
      formatter.dateStyle = .MediumStyle
      formatter.timeStyle = .ShortStyle
      let date = formatter.dateFromString(time)
  </code></pre>
  
  <p>getting <code>date as nil</code>, even I tried with custom formatter            </p>
  
  <pre><code>    //MMM dd, yyyy HH:mm a
      //formatter.dateFromString("MMM dd, yyyy HH:mm a")
  </code></pre>
  
  <p>still not working, anything missing?</p>