GENERATE_MASTER_OBJECT_FILE to remove -ObjC

* Added GENERATE_MASTER_OBJECT_FILE = YES so consuming app's no longer need "-ObjC" in their projects.
* This fixes missing selector hexStringFromData errors and possibly other selectors for those who did not have "-ObjC"

Author: jkasten2

iOS_SDK/OneSignalDevApp/OneSignalDevApp.xcodeproj/project.pbxproj

@@ -488,7 +488,6 @@
 				INFOPLIST_FILE = OneSignalDevApp/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
-				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_BUNDLE_IDENTIFIER = com.onesignal.example;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 			};

iOS_SDK/OneSignalSDK/OneSignal.xcodeproj/project.pbxproj

@@ -740,6 +740,7 @@
 			developmentRegion = English;
 			hasScannedForEncodings = 0;
 			knownRegions = (
+				English,
 				en,
 			);
 			mainGroup = 37747F8A19147D6400558FAD;
@@ -990,6 +991,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
+				GENERATE_MASTER_OBJECT_FILE = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
 				ONLY_ACTIVE_ARCH = NO;
 				OTHER_CFLAGS = (
@@ -1015,7 +1017,6 @@
 				);
 				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
 				OTHER_CFLAGS = "-fembed-bitcode";
-				OTHER_LDFLAGS = "";
 				PRODUCT_NAME = OneSignal;
 				SKIP_INSTALL = NO;
 			};
@@ -1046,7 +1047,6 @@
 				MACH_O_TYPE = mh_dylib;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				OTHER_CFLAGS = "-fembed-bitcode";
-				OTHER_LDFLAGS = "";
 				PRODUCT_BUNDLE_IDENTIFIER = "com.onesignal.OneSignal-Dynamic";
 				PRODUCT_NAME = OneSignal;
 				SKIP_INSTALL = NO;
@@ -1139,6 +1139,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
+				GENERATE_MASTER_OBJECT_FILE = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
 				ONLY_ACTIVE_ARCH = NO;
 				OTHER_CFLAGS = (
@@ -1164,7 +1165,6 @@
 				);
 				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
 				OTHER_CFLAGS = "-fembed-bitcode";
-				OTHER_LDFLAGS = "";
 				PRODUCT_NAME = OneSignal;
 				SKIP_INSTALL = NO;
 			};
@@ -1195,7 +1195,6 @@
 				MACH_O_TYPE = mh_dylib;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				OTHER_CFLAGS = "-fembed-bitcode";
-				OTHER_LDFLAGS = "";
 				PRODUCT_BUNDLE_IDENTIFIER = "com.onesignal.OneSignal-Dynamic";
 				PRODUCT_NAME = OneSignal;
 				SKIP_INSTALL = NO;