Including static images in React Native not working :(

1. Error message

Requiring unknown module "image!backdrop". If you are sure the module is there, try restarting the packager.

2. React template

var backdrop = (
  <Image source={require('image!backdrop')}>
    <Text style={styles.welcome}>heading</Text>
  </Image>
);

3. Folder Structure

$ ls -1 iOS/Images.xcassets/backdrop.imageset/
Contents.json
backdrop-1.jpg
backdrop-2.jpg
backdrop.jpg

4. Contents.json

{
  "images" : [
    {
      "idiom" : "universal",
      "scale" : "1x",
      "filename" : "backdrop.jpg"
    },
    {
      "idiom" : "universal",
      "scale" : "2x",
      "filename" : "backdrop-1.jpg"
    },
    {
      "idiom" : "universal",
      "scale" : "3x",
      "filename" : "backdrop-2.jpg"
    }
  ],
  "info" : {
    "version" : 1,
    "author" : "xcode"
  }
}