Revise README with project details and features

Updated project description and added features and tech stack sections.

README.md

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-# SerialsEnforcingInterface
+# Serial Enforcing Interface Database
-The Serial Enforcing Interface Database is a web-based application designed to simulate the management of criminal records for individuals. It allows users to create profiles, attach criminal records, and store the data in a MySQL database through a simple PHP interface. 
+
+A simple **web-based criminal records management system** built with **PHP**, **MySQL**, and **HTML/CSS**.  
+The project allows creating, viewing, updating, and deleting **person profiles** and their associated **criminal records**.
+
+---
+
+## Features
+
+- **Profile Management**
+  - Create a new profile with:
+    - Picture upload
+    - First, middle, and last names
+    - Date of birth
+    - State of residence
+  - View existing profiles
+  - Delete profiles
+
+- **Criminal Record Management**
+  - Add multiple criminal offenses per profile
+  - Each record includes:
+    - Offense date
+    - Type of offense
+    - Disposition outcome
+    - Detailed location (prefix, street, unit, city, state, ZIP, county)
+    - Sentence/penalty (optional)
+  - Delete individual offenses
+
+- **Landing Page**
+  - Navigation to:
+    - Profile catalog
+    - Profile creation form
+    - External “Exit” link
+
+---
+
+## Tech Stack
+
+- **Frontend:** HTML5, CSS3  
+- **Backend:** PHP 7+  
+- **Database:** MySQL (tested with MariaDB)  
+- **File Handling:** JSON intermediary for staging profile data before database commit  
+
+---
+
+