diff --git a/README.md b/README.md
index 0313315..272f5f1 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,12 @@
 # py-dir-watcher
+1. Copy a directory to a backup location.
+2. Check for changes in original directory's file content.
+3. Replace with the original file content if changes are found.
 
+## Cloner
+- `target` is the directory to clone
+- `backup` is the backup directory
+- `interval` is the interval which the script check for changes
+
+## How does it check for changes?
+This script check for changes by comparing md5 hash from original file and the clone file.
\ No newline at end of file