Refine formatting and headings in README.md

Updated section headings and formatting in README.md.

Author: RJohnson2106

README.md

@@ -1,27 +1,27 @@
-# 🖥️ IP Address Lookup Tool (PowerShell GUI)
+# IP Address Lookup Tool (PowerShell GUI)
 
 A user-friendly PowerShell application for performing IP address hostname lookups via a graphical interface. Built by **Ryan Johnson**.
 
 ---
 
-## 📌 Features
+## Features
 
-- ✅ **Three operational modes:**
+- **Three operational modes:**
   - **Single IP Mode:** Look up a single IP address manually
   - **Text File Mode:** Upload a `.txt` file of IPs and bulk check all entries
   - **Manual Bulk Mode:** Manually add IPs one-by-one and bulk check them
 
-- 💾 **CSV Export Support:** Lookup results are saved as a structured CSV file
+- **CSV Export Support:** Lookup results are saved as a structured CSV file
 
-- 🎨 **Intuitive GUI:** Made with Windows Forms (`System.Windows.Forms`) for a simple and accessible user interface
+- **Intuitive GUI:** Made with Windows Forms (`System.Windows.Forms`) for a simple and accessible user interface
 
-- 🛠️ **Input Validation:** Built-in regex filter to verify valid IPv4 addresses
+- **Input Validation:** Built-in regex filter to verify valid IPv4 addresses
 
-- 🔒 **Safe File Handling:** Cleans whitespace in text file mode and gracefully handles invalid input or unresolved hostnames
+- **Safe File Handling:** Cleans whitespace in text file mode and gracefully handles invalid input or unresolved hostnames
 
 ---
 
-## 🖱️ GUI Overview
+## GUI Overview
 
 | Control | Function |
 |--------|----------|
@@ -35,15 +35,15 @@ A user-friendly PowerShell application for performing IP address hostname lookup
 
 ---
 
-## ⚙️ How It Works
+## How It Works
 
 - Uses `[System.Net.Dns]::GetHostEntry()` to resolve each IP to a hostname
 - Catches and logs resolution errors (including invalid formats)
 - Saves output as a `.csv` file at the selected path
 
 ---
 
-## 🧠 Built With
+## Built With
 
 - PowerShell
 - Windows Forms GUI (`System.Windows.Forms`)
@@ -52,7 +52,7 @@ A user-friendly PowerShell application for performing IP address hostname lookup
 
 ---
 
-## 📂 File Output Example
+## File Output Example
 
 ```csv
 "IPAddress","Hostname"