Add property to determine if device is compatible with Apple Pencil (#…

…179)

* Add property to determine is device is compatible with Apple Pencil

* Moved Apple Pencil code into separate extension. Added option set to describe which generation of the Apple Pencil is supported

* Updated spacing to satisfy swiftlint warnings

* Removed whitespace to satisfy Swiftlint

Source/Device.generated.swift

@@ -671,7 +671,6 @@ public enum Device {
     public var hasRoundedDisplayCorners: Bool {
       return isOneOf(Device.allDevicesWithRoundedDisplayCorners)
     }
-
   #elseif os(tvOS)
     /// All TVs
     public static var allTVs: [Device] {
@@ -1191,3 +1190,47 @@ extension Device {
   }
 }
 #endif
+
+#if os(iOS)
+// MARK: - Apple Pencil
+extension Device {
+
+  /**
+    This option set describes the current Apple Pencils
+    - firstGeneration:  1st Generation Apple Pencil
+    - secondGeneration: 2nd Generation Apple Pencil
+   */
+  public struct ApplePencilSupport: OptionSet {
+
+    public var rawValue: UInt
+
+    public init(rawValue: UInt) {
+      self.rawValue = rawValue
+    }
+
+    public static let firstGeneration = ApplePencilSupport(rawValue: 0x01)
+    public static let secondGeneration = ApplePencilSupport(rawValue: 0x02)
+  }
+
+  /// All Apple Pencil Capable Devices
+  public static var allApplePencilCapableDevices: [Device] {
+    return [.iPad6, .iPadAir3, .iPadMini5, .iPadPro9Inch, .iPadPro12Inch, .iPadPro12Inch2, .iPadPro10Inch, .iPadPro11Inch, .iPadPro12Inch3]
+  }
+
+  /// Returns supported version of the Apple Pencil
+  public var applePencilSupport: ApplePencilSupport {
+    switch self {
+      case .iPad6: return .firstGeneration
+      case .iPadAir3: return .firstGeneration
+      case .iPadMini5: return .firstGeneration
+      case .iPadPro9Inch: return .firstGeneration
+      case .iPadPro12Inch: return .firstGeneration
+      case .iPadPro12Inch2: return .firstGeneration
+      case .iPadPro10Inch: return .firstGeneration
+      case .iPadPro11Inch: return .secondGeneration
+      case .iPadPro12Inch3: return .secondGeneration
+      default: return []
+    }
+  }
+}
+#endif