title: NSDataBase64DecodingOptions is returning nil value
body: <p>I am trying to parse base64 type into imageData. But my NSDataBase64DecodingOptions returns nil. I printed decodedData and it is nil. My code is here </p>
  
  <pre><code>var base64String = arrayText["auto_type_android_img"] as String
  
  println("basestring64 is \(base64String)")
  
  let decodedData = NSData(base64EncodedString: base64String, options: NSDataBase64DecodingOptions(rawValue: 0))
  
  println("base string is: \(decodedData)")
  if let decodedImage = UIImage(data: decodedData!) {
  
      imageTypeOfCar?.image = decodedImage
  }
  </code></pre>