Merge pull request #4 from Nyae44/add-README

add README.md

Author: Nyae44

README.md

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+# URL Shortener Application
+
+A simple Go-based web application that allows users to shorten URLs. The application generates a unique shortened URL for every input URL using SHA-256, stores it in a SQLite database, and redirects users to the original URL when they access the shortened link.
+
+---
+
+## **Features**
+- Shorten any URL quickly.
+- Persistent storage using SQLite.
+- Redirection from shortened URLs to the original website.
+- Simple and intuitive user interface.
+
+---
+
+## **Screenshots**
+
+
+### Shortened URL Result
+Once you shorten a URL, the application provides a shortened link that you can copy to the clipboard.  
+![Shortened URL Result](https://github.com/Nyae44/url-shortener-app/blob/master/screenshots/url_shortener.png)
+
+---
+
+