Make password parameter explicit for receipt verification

README.md

@@ -93,7 +93,7 @@ SwiftyStoreKit.restorePurchases() { results in
 ### Verify Receipt
 
 ```swift
-SwiftyStoreKit.verifyReceipt() { result in
+SwiftyStoreKit.verifyReceipt(password: "your-shared-secret") { result in
     if case .error(let error) = result {
         if case .noReceiptData = error {
             self.refreshReceipt()
@@ -122,7 +122,7 @@ SwiftyStoreKit.verifyReceipt(password: "your_shared_secret")
 ### Verify Purchase
 
 ```swift
-SwiftyStoreKit.verifyReceipt() { result in
+SwiftyStoreKit.verifyReceipt(password: "your-shared-secret") { result in
     switch result {
     case .success(let receipt):
         // Verify the purchase of Consumable or NonConsumable
@@ -147,7 +147,7 @@ Note that for consumable products, the receipt will only include the information
 ### Verify Subscription
 
 ```swift
-SwiftyStoreKit.verifyReceipt() { result in
+SwiftyStoreKit.verifyReceipt(password: "your-shared-secret") { result in
     switch result {
     case .success(let receipt):
         // Verify the purchase of a Subscription

SwiftyStoreDemo/ViewController.swift

@@ -96,7 +96,7 @@ class ViewController: UIViewController {
     @IBAction func verifyReceipt() {
 
         NetworkActivityIndicatorManager.networkOperationStarted()
-        SwiftyStoreKit.verifyReceipt() { result in
+        SwiftyStoreKit.verifyReceipt(password: "your-shared-secret") { result in
             NetworkActivityIndicatorManager.networkOperationFinished()
 
             self.showAlert(self.alertForVerifyReceipt(result))
@@ -112,7 +112,7 @@ class ViewController: UIViewController {
     func verifyPurchase(_ purchase: RegisteredPurchase) {
      
         NetworkActivityIndicatorManager.networkOperationStarted()
-        SwiftyStoreKit.verifyReceipt() { result in
+        SwiftyStoreKit.verifyReceipt(password: "your-shared-secret") { result in
             NetworkActivityIndicatorManager.networkOperationFinished()
             
             switch result {

SwiftyStoreOSXDemo/ViewController.swift

@@ -91,7 +91,7 @@ class ViewController: NSViewController {
 
     @IBAction func verifyReceipt(_ sender: AnyObject?) {
 
-        SwiftyStoreKit.verifyReceipt() { result in
+        SwiftyStoreKit.verifyReceipt(password: "your-shared-secret") { result in
 
             self.showAlert(self.alertForVerifyReceipt(result)) { response in
 
@@ -102,7 +102,7 @@ class ViewController: NSViewController {
 
     func verifyPurchase(_ purchase: RegisteredPurchase) {
         
-        SwiftyStoreKit.verifyReceipt() { result in
+        SwiftyStoreKit.verifyReceipt(password: "your-shared-secret") { result in
             
             switch result {
             case .success(let receipt):