Update README.md

README.md

@@ -1,3 +1,19 @@
 # backupcleaner
 
-Tool to cleanup backup directory with daily, weekly and monthly backups
+Tool to cleanup backup directory with daily, weekly and monthly backups.
+
+```
+usage: clean-backups.py [-h] [-d N] [-w N] [-m N] [-f] PATH
+
+Cleanup old backups
+
+positional arguments:
+  PATH               directory path
+
+optional arguments:
+  -h, --help         show this help message and exit
+  -d N, --daily N    keep N daily backups, default: 7
+  -w N, --weekly N   keep N weekly backups, default: 4
+  -m N, --monthly N  keep N monthly backups, default: 3
+  -f, --force        suppress remove confirmation
+```