format readme

README.md

@@ -20,14 +20,14 @@ Basic function:
 # Usage
 
 - flit add [-d {days}] [-m {description}] [files]
-  - Create folder with 30 days or specified life time
-  - You can add *files* to be copied in the folder, or simply copy them
-    yourself.
+    - Create folder with 30 days or specified life time
+    - You can add *files* to be copied in the folder, or simply copy them
+      yourself.
 - flit list [-v]
-  - List folders with due dates
-  - Use the verbose switch to list URLS to all files in the shares
+    - List folders with due dates
+    - Use the verbose switch to list URLS to all files in the shares
 - flit del
-  - Delete due folders
+    - Delete due folders
 
 Note: This utility does not create indexes of files. Use another tool, or let
 web server index.