Update documentation

Author: ninjaprox

NVActivityIndicatorView/NVActivityIndicatorView.swift

@@ -332,7 +332,7 @@ public class NVActivityIndicatorView: UIView {
      Create a activity indicator view with default type, color and padding.
      This is used by storyboard to initiate the view.
 
-     - Default type is pacman.
+     - Default type is BallSpinFadeLoader.
      - Default color is white.
      - Default padding is 0.
 
@@ -349,7 +349,7 @@ public class NVActivityIndicatorView: UIView {
      Create a activity indicator view with specified frame, type, color and padding.
 
      - parameter frame: view's frame.
-     - parameter type: animation type, value of NVActivityIndicatorType enum. Default type is pacman.
+     - parameter type: animation type, value of NVActivityIndicatorType enum. Default type is BallSpinFadeLoader.
      - parameter color: color of activity indicator view. Default color is white.
      - parameter padding: view's padding. Default padding is 0.