Enhance README with installation instructions

Author: code-yeongyu

README.md

@@ -1,40 +1,42 @@
-# AiShell
+# AiShell 🤖
 
 A simple Python code that connects to OpenAI's ChatGPT and executes the returned results.
 
-## Examples
+## Examples 💡
 
-### Simple Utility commands
+### Simple Utility commands 🛠
 
 ![terminal example](images/aishell_example.png)
 
-### A git helper
+### A git helper 💻
 
 ![terminal example](images/aishell_example2.png)
 
-### A powerful git assistant: "add all files & amend last commit & push"
+### A powerful git assistant 💪🏻👨‍💻💻: "add all files & amend last commit & push"
 
 ![terminal example3](images/aishell_example3.png)
 
+## Installation
 
-## Prerequisites
+```sh
+curl -sL https://raw.githubusercontent.com/code-yeongyu/AiShell/master/install.sh | sh
+```
+
+## Prerequisites 📚
 
 - Python 3.9.5
 - Poetry
 - OpenAI API Key
 
-## Getting Started
+## Getting Started 🚀
 
 1. Create account on OpenAI
 1. Go to <https://platform.openai.com/account/api-keys>, Copy API key
-1. Set the API key as an environment variable OPENAI_API_KEY or inject it directly into the code by editing it.
-1. Clone this repository to your local machine using git clone <repository-url>
-1. Install the dependencies by running poetry install in your terminal
-1. Start AiShell by running poetry run python3 aishell/main.py
+1. Set the API key as an environment variable `OPENAI_API_KEY` or inject it directly into the code by editing it.
+1. [Install](#installation)
 
-## Contributions
+## Contributions 💬
 
 Feel free to contribute to AiShell by adding more functionality or fixing bugs. Some suggestions for contributions include:
 
-- Adding the ability to execute AiShell as a system command aishell <command>
 - Publishing AiShell to PyPI so that others can easily download and use it