Update README.md

Author: pwf2006

README.md

@@ -10,25 +10,24 @@
     //获取类的属性   
     - (void)getPropertyList {   
 
-    //属性个数   
+        //属性个数   
 
-    unsigned int count;    
+        unsigned int count;    
 
-    objc_property_t *properties = class_copyPropertyList([self class], &count);   
+        objc_property_t *properties = class_copyPropertyList([self class], &count);   
 
-    for (int i = 0; i < count; i++) {   
+        for (int i = 0; i < count; i++) {   
 
-        objc_property_t property = properties[i];   
+            objc_property_t property = properties[i];   
         
-        const char *name = property_getName(property);   
+            const char *name = property_getName(property);   
         
-        NSString *nameStr = [NSString stringWithCString:name encoding:NSUTF8StringEncoding];   
+            NSString *nameStr = [NSString stringWithCString:name encoding:NSUTF8StringEncoding];   
         
-        NSLog(@"***属性名:%@", nameStr);   
+            NSLog(@"***属性名:%@", nameStr);   
         
-    }   
-       
-}
+        }     
+    }
 
 此种方法只能获取类的属性,像: