Merge README

README.md

@@ -19,9 +19,60 @@ Fork of <a href='https://github.com/Akkyie/AKPickerView-Swift'>AKPickerView-Swif
 
 <img src="./Screenshot.gif" width="200" alt="Screenshot" />
 
+## Usage
+
+Since this view is using `UICollectionView` internally you have to provide data same way as you would do with collection view (using dataSource). You can also use delegate if you want to handle item selection or underlaying UIScrollView callbacks. See example project for details.
+
+Set the direction to vertical.
+```swift
+pickerView.isHorizontal = false
+```
+
+Disable wheel effect of the picker.
+```swift
+pickerView.isFlat = true
+```
+
+Prevent center selection when scrolling.
+```swift
+pickerView.selectCenter = false
+```
+
+Set spacing between cells, default 10.
+```swift
+pickerView.cellSpacing = 10
+```
+
+Set cell size (width for horizontal, height for vertical style), default 100.
+```swift
+pickerView.cellSize = 100
+```
+
+Set wheel effect perspective representation.
+```swift
+pickerView.viewDepth = 2000
+```
+
+Disable fading gradient mask.
+```swift
+pickerView.maskDisabled = true
+```
+
+Current selected index might be obtained from `selectedIndex`.
+```swift
+NSLog("\(pickerView.selectedIndex)")
+```
+
+And reload the picker view when any change in data set occurs.
+```swift
+pickerView.reloadData()
+```
+
+
+
 ## Example
 
-To run the example project, clone the repo, and run `pod install` from the Example directory first.
+To run the example project, clone the repo, and run `pod install` from the Example directory first. Or simplest way is just to run `pod try`.
 
 ## Installation