Update README.md

README.md

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-# encrypt-decrypt
-Using Caesar Cipher method to encrypt and decrypt messages.
+# Caesar Cipher :lock::key:
+
+This project implements a simple Caesar Cipher for encoding and decoding messages. The Caesar Cipher is a type of substitution cipher in which each letter in the plaintext is shifted a certain number of places down or up the alphabet.
+
+## Features
+
+- Encrypts text by shifting letters by a given number.
+- Decrypts text by reversing the shift.
+
+## Usage
+- **Direction**: Type `encode` to encrypt or `decode` to decrypt.
+- **Message**: The text you want to encode or decode.
+- **Shift Number**: The number of positions by which you want to shift the letters.
+
+## Example
+```sh
+Type 'encode' to encrypt, type 'decode' to decrypt:
+encode
+Type your message:
+hello
+Type the shift number:
+5
+The encoded text is mjqqt
+
+Type 'yes' to want to go again, type 'no' to want to quit. 
+no
+Thanks for using Caesar Cipher!
+```
+
+## Installation
+
+Clone the repository to your local machine:
+
+```sh
+git clone https://github.com/yourusername/caesar-cipher.git
+cd caesar-cipher
+```
+
+## Upcoming Updates
+1. **GUI Integration**: The next update will introduce an interface that allows users to perform encryption and decryption operations via GUI instead of terminal.
+2. **Advanced Encryption Method**: The encryption method will be upgraded from the Caesar Cipher to a more sophisticated algorithm to enhance security.
+
+##