Update Caeser README

Caeser-Cipher/README.md

@@ -17,12 +17,14 @@ This tool is a work in progress.
 
 ### Encrypt
 
-`python3 caeser-cipher.py encrypt "secretmessage"`
+`python3 caeser-cipher.py encrypt [secretmessage] [shift]`
 
-For example: `python3 caeser-cipher.py encrypt "Hi, how are you?""`
+For example: `python3 caeser-cipher.py encrypt "Hi, how are you?" 3"`
 
 ### Decrypt
 
 `python3 caeser-cipher.py decrypt "encryptedtext"`
 
-For example: `python3 caeser-cipher.py decrypt "hhhhhhhhhh"`
+For example: `python3 caeser-cipher.py decrypt "hhhhhhhhhh" 3`
+
+If you don't know the shift for the encrypted text, use 0 for the shift. The script will attempt to break the cipher for you.