add more docs

rongfengliang · rongfengliang · commit 0c0e093c2d84 · 2019-12-23T10:59:01.000+08:00
diff --git a/README.md b/README.md
@@ -11,7 +11,7 @@ GRANT replication slave ON *.* TO'root'@'%' identified by 'root';
 * flush privaliges
 
 ```code
-
+if needed
 ```
 
 * view master info
