change framework deployment target from 11.0 to 8.0

MJRefreshExample.xcodeproj/project.pbxproj

@@ -782,7 +782,7 @@
 				GCC_NO_COMMON_BLOCKS = YES;
 				INFOPLIST_FILE = MJRefreshFramework/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.520it.MJRefreshFramework;
 				PRODUCT_MODULE_NAME = MJRefresh;
@@ -823,7 +823,7 @@
 				GCC_NO_COMMON_BLOCKS = YES;
 				INFOPLIST_FILE = MJRefreshFramework/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.520it.MJRefreshFramework;
 				PRODUCT_MODULE_NAME = MJRefresh;