Backwards Compatibility

• Adds missing header method declarations that are required to maintain backwards compatibility with native initialization methods.
• Adds deprecation notices to these methods

Author: Nightsd01

ios/RCTOneSignal/RCTOneSignal.h

@@ -5,11 +5,16 @@
 #import "OneSignal.h"
 #endif
 
+#define INIT_DEPRECATION_NOTICE "Objective-C Initialization of the OneSignal SDK has been deprecated. Use JavaScript init instead."
+
 @interface RCTOneSignal : NSObject <OSSubscriptionObserver, OSEmailSubscriptionObserver>
 
 + (RCTOneSignal *) sharedInstance;
 
 - (void)configureWithAppId:(NSString *)appId;
 - (void)configureWithAppId:(NSString *)appId settings:(NSDictionary*)settings;
 
+- (id)initWithLaunchOptions:(NSDictionary *)launchOptions appId:(NSString *)appId settings:(NSDictionary*)settings __deprecated_msg(INIT_DEPRECATION_NOTICE);
+- (id)initWithLaunchOptions:(NSDictionary *)launchOptions appId:(NSString *)appId __deprecated_msg(INIT_DEPRECATION_NOTICE);
+
 @end