added IBDesignable & IBInspectable for storyboard

Author: Gürhan Yerlikaya

Example/ScrollableStackView/Base.lproj/Main.storyboard

@@ -19,6 +19,13 @@
                     <view key="view" contentMode="scaleToFill" id="kh9-bI-dsS">
                         <rect key="frame" x="0.0" y="0.0" width="414" height="736"/>
                         <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                        <subviews>
+                            <view contentMode="scaleToFill" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="6Ei-Z0-TR9" customClass="ScrollableStackView" customModule="ScrollableStackView">
+                                <rect key="frame" x="129" y="66" width="240" height="128"/>
+                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                                <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                            </view>
+                        </subviews>
                         <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                     </view>
                 </viewController>

README.md

@@ -1,6 +1,6 @@
 # ScrollableStackView
 
-Scroll your stack view with a smile up on your face. Written in Swift 3. Used Apple's pure auto layout.
+Scrollable UIStackView. Scroll your stack view with a smile up on your face. Written in Swift 3. Used Apple's pure auto layout
 
 <!---->
 <!--[![CI Status](http://img.shields.io/travis/Gürhan Yerlikaya/ScrollableStackView.svg?style=flat)](https://travis-ci.org/Gürhan Yerlikaya/ScrollableStackView)-->
@@ -11,10 +11,10 @@ Scroll your stack view with a smile up on your face. Written in Swift 3. Used Ap
 
 ### TODO
 
-- [ ] add Storyboard in example project
-- [ ] try NSLayoutAnchor style (requires iOS 9 and later)
-- [ ] Carthage
-- [ ] Swift Package Manager
+- [ ] Add Storyboard in example project  
+- [ ] Try NSLayoutAnchor style (requires iOS 9 and later)
+- [ ] Add Carthage support
+- [ ] Add Swift Package Manager support
 
 ## Example
 
@@ -32,7 +32,6 @@ view.addSubview(scrollable)
 let rectangle = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 55))
 rectangle.backgroundColor = UIColor.red
 scrollable.stackView.addArrangedSubview(rectangle)
-}
 ```
 
 ### Sample Code (Objective-C)

ScrollableStackView/Classes/ScrollableStackView.swift

@@ -8,11 +8,13 @@
 
 import UIKit
 
+@IBDesignable
 @objc public class ScrollableStackView: UIView {
 
     fileprivate var didSetupConstraints = false
     fileprivate var scrollView: UIScrollView!
     @objc open var stackView: UIStackView!
+    @objc @IBInspectable open var spacing: CGFloat = 8
 
     override public func didMoveToSuperview() {
         super.didMoveToSuperview()
@@ -33,7 +35,7 @@ import UIKit
         stackView = UIStackView(frame: scrollView.frame)
         stackView.translatesAutoresizingMaskIntoConstraints = false
         stackView.axis = .vertical
-        stackView.spacing = 8
+        stackView.spacing = spacing
         stackView.distribution = .equalSpacing
         scrollView.addSubview(stackView)