update

README.md

@@ -30,8 +30,9 @@ The server.py mainly provides two api.
 /directory?path=relative/path/to/file
 ```
 params: 
-    path: the directory that you want to list.
+- path: the directory that you want to list.
 return:
+
 ```json
 {
     "dirs": [list, of, subdirs],
@@ -55,7 +56,7 @@ params:
 
 return:
 
-the image stream.
+- the image stream.
 
 For more details about the structure, please see the network.py.