Merge pull request #49 from pvieito/master

[Package] Added SwiftPM support and added fix to ensure the currentHandle exists before first interaction

Package.swift

@@ -0,0 +1,27 @@
+// swift-tools-version:5.0
+
+import PackageDescription
+
+let package = Package(
+    name: "ChromaColorPicker",
+    platforms: [
+        .iOS(.v10)
+    ],
+    products: [
+        .library(
+            name: "ChromaColorPicker",
+            targets: ["ChromaColorPicker"]
+        )
+    ],
+    targets: [
+        .target(
+            name: "ChromaColorPicker",
+            path: "Source"
+        ),
+        .testTarget(
+            name: "ChromaColorPickerTests",
+            dependencies: ["ChromaColorPicker"],
+            path: "Tests"
+        )
+    ]
+)

Source/ChromaColorPicker.swift

@@ -91,6 +91,10 @@ public class ChromaColorPicker: UIControl, ChromaControlStylable {
         handles.append(handle)
         colorWheelView.addSubview(handle)
         brightnessSlider?.trackColor = handle.color
+        
+        if currentHandle == nil {
+            currentHandle = handle
+        }
     }
     
     public func connect(_ slider: ChromaBrightnessSlider) {