returning if iOS version is less than 8

In presentDialogWithMessageDict making sure to use an alertview instead and return.
Fixing comments

Author: emawby

iOS_SDK/OneSignalSDK/Source/OneSignalAlertViewDelegate.m

@@ -77,10 +77,10 @@ @implementation OneSignalAlertViewDelegate
 
 NSDictionary* mMessageDict;
 
-
- //delegateReference exist to keep ARC from cleaning up this object when it goes out of scope.
- //This is becuase UIAlertView delegate is set to weak instead of strong
- 
+/*
+ delegateReference exist to keep ARC from cleaning up this object when it goes out of scope.
+ This is becuase UIAlertView delegate is set to weak instead of strong
+ */
 static NSMutableArray* delegateReference;
 
 - (id)initWithMessageDict:(NSDictionary*)messageDict {

iOS_SDK/OneSignalSDK/Source/OneSignalDialogController.m

@@ -79,6 +79,7 @@ + (instancetype _Nonnull)sharedInstance {
 - (void)presentDialogWithMessageDict:(NSDictionary *)messageDict {
     if ([OneSignalHelper isIOSVersionLessThan:@"8.0"]) {
         [OneSignalAlertView showInAppAlert:messageDict];
+        return;
     }
     let payload = [OSNotificationPayload parseWithApns:messageDict];
     // Add action buttons to payload

iOS_SDK/OneSignalSDK/UnitTests/UnitTests.m

@@ -1185,24 +1185,6 @@ - (void)testNotificationOpenFromButtonPressWithNewformat {
     XCTAssertNil(OneSignalClientOverrider.lastHTTPRequest);
     XCTAssertEqual(OneSignalClientOverrider.networkRequestCount, 3);
 }
-/*
- [OneSignal promptForPushNotificationsWithUserResponse:nil fallbackToSettings:true];
- 
- [UnitTestCommonMethods runBackgroundThreads];
- 
- //assert that the correct dialog was presented
- XCTAssertNotNil([OneSignalDialogControllerOverrider getCurrentDialog]);
- XCTAssertEqualObjects(OneSignalDialogControllerOverrider.getCurrentDialog.title, @"Open Settings");
- 
- //answer 'Open Settings' on the prompt
- OneSignalDialogControllerOverrider.getCurrentDialog.completion(0);
- 
- [UnitTestCommonMethods runBackgroundThreads];
- 
- //make sure the app actually tried to open settings
- XCTAssertNotNil(UIApplicationOverrider.lastOpenedUrl);
- XCTAssertEqualObjects(UIApplicationOverrider.lastOpenedUrl.absoluteString, UIApplicationOpenSettingsURLString);
- */
 
 // Testing iOS 10 - 2.4.0+ button fromat - with os_data aps payload format
 - (void)notificationAlertButtonsDisplayWithFormat:(NSDictionary *)userInfo {