Add custom dialog closure

Added an optional closure to allow developers to present their own dialog once all criteria for the dialog are filled. Passes closures for 'Rate', 'Remind', and 'No thanks'

Source/Armchair.swift

@@ -357,6 +357,8 @@ public func resetDefaults() {
     Manager.defaultManager.didOptToRateClosure              = nil
     Manager.defaultManager.didOptToRemindLaterClosure       = nil
     
+    Manager.defaultManager.customAlertClosure               = nil
+
 #if os(iOS)
     Manager.defaultManager.usesAnimation                    = true
     Manager.defaultManager.tintColor                        = nil
@@ -562,6 +564,7 @@ public func rateApp() {
  */
 
 public typealias ArmchairClosure = () -> ()
+public typealias ArmchairClosureCustomAlert = (_ rateAppClosure: ArmchairClosure, _ remindLaterClosure: ArmchairClosure, _ noThanksClosure: ArmchairClosure) -> ()
 public typealias ArmchairAnimateClosure = (Bool) -> ()
 public typealias ArmchairShouldPromptClosure = (ArmchairTrackingInfo) -> Bool
 public typealias ArmchairShouldIncrementClosure = () -> Bool
@@ -920,6 +923,8 @@ open class Manager : ArmchairManager {
     var didOptToRateClosure: ArmchairClosure?
     var didOptToRemindLaterClosure: ArmchairClosure?
     
+    var customAlertClosure: ArmchairClosureCustomAlert?
+    
     #if os(iOS)
     var willPresentModalViewClosure: ArmchairAnimateClosure?
     var didDismissModalViewClosure: ArmchairAnimateClosure?
@@ -1184,6 +1189,12 @@ open class Manager : ArmchairManager {
     }
     
     fileprivate func showRatingAlert() {
+        if let customClosure = customAlertClosure {
+            customClosure({[weak self] in self?._rateApp()}, {[weak self] in self?.remindMeLater()}, {[weak self] in self?.dontRate()})
+            if let closure = self.didDisplayAlertClosure {
+                closure()
+            }
+        } else {
             #if os(iOS)
                 if (operatingSystemVersion >= 8 && usesAlertController) || operatingSystemVersion >= 9 {
                     /* iOS 8 uses new UIAlertController API*/
@@ -1263,6 +1274,8 @@ open class Manager : ArmchairManager {
             #endif
         }
         
+    }
+    
     // MARK: -
     // MARK: PRIVATE Alert View / StoreKit Delegate Methods