let pickerController = DKImagePickerController()

pickerController.didSelectAssets = { (assets: [DKAsset]) in
    print("didSelectAssets")
    print(assets)
}

self.presentViewController(pickerController, animated: true) {}

/// Forces selection of tapped image immediatly.
public var singleSelect = false
    
/// The maximum count of assets which the user will be able to select.
public var maxSelectableCount = 999

/// Set the defaultAssetGroup to specify which album is the default asset group.
public var defaultAssetGroup: PHAssetCollectionSubtype?

/// The types of PHAssetCollection to display in the picker.
public var assetGroupTypes: [PHAssetCollectionSubtype] = [
    .SmartAlbumUserLibrary,
    .SmartAlbumFavorites,
    .AlbumRegular
    ]

/// Set the showsEmptyAlbums to specify whether or not the empty albums is shown in the picker.
public var showsEmptyAlbums = true

/// The type of picker interface to be displayed by the controller.
public var assetType: DKImagePickerControllerAssetType = .AllAssets

/// The predicate applies to images only.
public var imageFetchPredicate: NSPredicate?

/// The predicate applies to videos only.
public var videoFetchPredicate: NSPredicate?

/// If sourceType is Camera will cause the assetType & maxSelectableCount & allowMultipleTypes & defaultSelectedAssets to be ignored.
public var sourceType: DKImagePickerControllerSourceType = .Both

/// Whether allows to select photos and videos at the same time.
public var allowMultipleTypes = true

/// If YES, and the requested image is not stored on the local device, the Picker downloads the image from iCloud.
public var autoDownloadWhenAssetIsInCloud = true

/// Determines whether or not the rotation is enabled.
public var allowsLandscape = false

/// The callback block is executed when user pressed the cancel button.
public var didCancel: (() -> Void)?
public var showsCancelButton = false

/// The callback block is executed when user pressed the select button.
public var didSelectAssets: ((assets: [DKAsset]) -> Void)?

/// It will have selected the specific assets.
public var defaultSelectedAssets: [DKAsset]?

/**
    Writes the image in the receiver to the file specified by a given path.
*/
public func writeImageToFile(path: String, completeBlock: (success: Bool) -> Void)

/**
    Writes the AV in the receiver to the file specified by a given path.

    - parameter presetName:    An NSString specifying the name of the preset template for the export. See AVAssetExportPresetXXX.
*/
public func writeAVToFile(path: String, presetName: String, completeBlock: (success: Bool) -> Void)

UINavigationBar.appearance().titleTextAttributes = [
    NSFontAttributeName : UIFont(name: "Optima-BoldItalic", size: 21)!,
    NSForegroundColorAttributeName : UIColor.redColor()
]