feat: update readme

README.md

@@ -20,6 +20,12 @@ Output:
 Formated date: 2020-05-30 13:32:04 +08:00
 ```
 
+| Format                | Date                                    |
+|-----------------------|-----------------------------------------|
+| yy-M-d'T'H:m:s a z | 25-1-11T11:46:19 AM +08:00              |
+| yyyy-MM-dd'T'HH:mm:ss z | 2025-01-11T11:43:41 +08:00              |
+| EEE MMM dd yyyy HH:mm:ss z | Sat Jan 11 2025 11:44:34 +08:00         |
+| EEEE MMMM dd yyyy HH:mm:ss z | Saturday January 11 2025 11:44:57 +08:00 |
 
 ```rust
 format_human(Duration::from_secs(2 * 24 * 60 * 60 + 1));