Update project.pbxproj

Author: zhiqingchen

ios/taroDemo.xcodeproj/project.pbxproj

@@ -492,6 +492,7 @@
 				OTHER_SWIFT_FLAGS = "$(inherited) -D EXPO_CONFIGURATION_DEBUG";
 				PRODUCT_BUNDLE_IDENTIFIER = "org.reactjs.native.example.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 5.0;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/taroDemo.app/taroDemo";
 			};
 			name = Debug;
@@ -517,6 +518,7 @@
 				OTHER_SWIFT_FLAGS = "$(inherited) -D EXPO_CONFIGURATION_RELEASE";
 				PRODUCT_BUNDLE_IDENTIFIER = "org.reactjs.native.example.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 5.0;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/taroDemo.app/taroDemo";
 			};
 			name = Release;