chore: update readme

readme.md

@@ -1,5 +1,5 @@
 <div align="center">
-  <img src="assets/logo.png" width="100">
+  <img src="assets/logo.png" width="150">
   <h1>Minimal YouTube</h1>
 </div>
 
@@ -9,6 +9,13 @@ Minimal YouTube is an extension that replaces the YouTube UI with a minimal desi
   <img src="assets/screenshot.png" width="1080">
 </p>
 
+## Installation
+- **Fork** this repo, then **clone your forked repo locally**. If you don't have a github account, you can simply download a zip of the repo and unzip it on your computer.
+- **Open [the extensions page](chrome://extensions)** in your browser: `chrome://extensions`. This link works on any chromium-based browser.
+- If you did not do it already, **toggle the "developer mode"**. This is usually a toggle button at the top right of the extensions page.
+- Click the button **_load unpacked extension_**.
+- In the window that pops up, **select the folder that contains this minimal extension**, then **click _ok_**.
+- **Done!** A new extension called _Minimal Youtube_ should have appeared in the list.
 
 ### Related