Update README.md

README.md

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 # instagram-notes
 Display your current Last.fm activity on your Instagram notes!
+
+# Installation
+  - **Prerequisites**
+    - Last.fm API Key   - available [here](https://www.last.fm/api/account/create)
+    - Python 3.12+      - available [here](https://www.python.org/downloads)
+    - Instagram Account - available [here](https://www.instagram.com)
+    - Git               - available [here](https://git-scm.com/)
+
+  - **Downloading repo**
+    - ```git clone https://github.com/zyqunix/instagram-notes.git```
+  
+  - **Linux 🐧**
+    - ```python -m venv venv && source venv/bin/activate```
+    - ```pip install -r requirements.txt```
+    - ```python main.py```
+    
+  - **Windows**
+    - ```pip install -r requirements.txt```
+    - ```python main.py```