Replace README.md with clearer, beginner-friendly version

[Copilot]

This PR replaces the current README.md with a streamlined, beginner-friendly version that better serves users who want to quickly install SillyTavern on Android Termux.

Changes Made

• Simplified structure: Removed complex table of contents and condensed multiple sections into clearer, focused sections
• Better error handling: Improved troubleshooting section with clear formatting for common bash: not found and curl: not found errors
• Clearer instructions: Made the installation process more straightforward with step-by-step clarity
• Enhanced readability: Used better formatting, bullet points, and visual separators to make the README more scannable
• Maintained functionality: All essential information and links are preserved, just presented more clearly

Key Improvements

✅ Explains what the auto-installer does in simple, digestible bullet points
✅ Lists basic requirements with clear troubleshooting for missing dependencies
✅ Provides quick-start command prominently displayed for easy copy-paste
✅ Links to SillyTavern basics guide for users who want to learn more
✅ Credits original author and community as requested

The new README is more accessible to beginners while maintaining all the essential information from the original version. The install command and functionality remain exactly the same - only the presentation has been improved.

This pull request was created as a result of the following prompt from Copilot chat.

Replace the current README.md with a clearer, beginner-friendly version. The new version should:

• Explain what the auto-installer does in simple terms
• List basic requirements and installation steps
• Include troubleshooting for missing bash/curl
• Offer a quick-start command for installation
• Link to the SillyTavern basics guide
• Credit the original author and community

Use this improved draft:

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🚀 SillyTavern Auto-Installer for Termux (STAGING)

Install SillyTavern (staging branch) on Android with Termux in one step—no experience needed!

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📋 What Does This Script Do?

• Updates Termux
• Installs required packages: nodejs, git, esbuild
• Downloads SillyTavern (staging branch)
• Installs all dependencies
• Starts SillyTavern automatically
• Links you to a quick-start guide

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🟢 Requirements

If you see errors like:

• bash: not found
• curl: not found

Run this in Termux first:

pkg update && pkg install -y curl bash

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🚀 Quick Install

Copy and paste this command into Termux:

curl -sL https://raw.githubusercontent.com/Rawi1005/st-autoinstall/main/install.sh | bash

Sit back and let it finish.
SillyTavern will start automatically when done!

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📘 Learn the Basics

Check out the basics here:
https://sillytavern.rnsv.xyz/editor

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🙌 Credits

Made by Rane
For the Thai SillyTavern community

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