Merge pull request #23 from KeenenCharles/master

Updated readme with completionHandler

README.md

@@ -12,21 +12,23 @@ This is pretty simple to use:
 
 ```Swift
 let image = UIImage(named: "hello.png")
-let colors = image.getColors()
 
-backgroundView.backgroundColor = colors.backgroundColor
-mainLabel.textColor = colors.primaryColor
-secondaryLabel.textColor = colors.secondaryColor
-detailLabel.textColor = colors.detailColor
+image.getColors({ (colors) in
+  backgroundView.backgroundColor = colors.backgroundColor
+  mainLabel.textColor = colors.primaryColor
+  secondaryLabel.textColor = colors.secondaryColor
+  detailLabel.textColor = colors.detailColor
+})
+
 ```
 
 ## UIImage Methods
 
-- **getColors(scaleDownSize: CGSize) -> UIImageColors**
+- **getColors(scaleDownSize: CGSize, completionHandler: (UIImageColors) -> Void)**
 
-Get an UIImageColors struct from the image. Use smaller sizes for better performance at the cost of quality colors. Use larger sizes for better color sampling and quality at the cost of performance. 
+Get an UIImageColors struct from the image. Use smaller sizes for better performance at the cost of quality colors. Use larger sizes for better color sampling and quality at the cost of performance.
 
-- **getColors() -> UIImageColors**
+- **getColors(completionHandler: (UIImageColors) -> Void)**
 
 Get an UIImageColors struct from the image. The default image scale down is 250px width, and the aspect ratio height.