docs: update docs with feature

Author: shan-shaji

README.md

@@ -8,7 +8,17 @@ Automated script to install and setup Flutter development environment with Homeb
 curl -fsSl https://raw.githubusercontent.com/shan-shaji/setup-flutter/main/setup-flutter | /bin/bash
 ```
 
-Supports 
+This script will perform the following steps:
+
+- Install Home Brew
+- Install Snap - Linux
+- Install Open JDK 8
+- Install Android Studio
+- Install VS Code
+- Install FVM
+- Install Flutter default version
+
+## Supports 
 
 - ✅ Mac OS
-- 🚧 Ubuntu(Still Testing)
+- ✅ Ubuntu