Changed flag DEPLOYMENT_POSTPROCESSING to YES (#537)

* This was causing the mikechoch warnings in release 2.10.2 after switching the GENERATE_MASTER_OBJECT_FILE to YES

Author: mikechoch

iOS_SDK/OneSignalSDK/OneSignal.xcodeproj/project.pbxproj

@@ -1211,6 +1211,7 @@
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = YES;
 				DEBUG_INFORMATION_FORMAT = dwarf;
+				DEPLOYMENT_POSTPROCESSING = YES;
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
@@ -1362,6 +1363,7 @@
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = YES;
 				DEBUG_INFORMATION_FORMAT = dwarf;
+				DEPLOYMENT_POSTPROCESSING = YES;
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;