docs: update readme

Author: kelp404

README.md

@@ -5,14 +5,18 @@ A GUI AWS S3 file manager. It supports keyword search, download, upload and prev
 ![search](_screenshot/details.png)
 
 ## Installation
+[Go to release page.](https://github.com/kelp404/electron-s3-file-manager/releases)
+
+
+## Development
+### Run in development mode
 ```bash
 git clone https://github.com/kelp404/electron-s3-file-manager.git
 cd electron-s3-file-manager
 npm install
 npm start
 ```
 
-## Development
 ### Generate dark theme stylesheet
 #### 1. Disable dark mode.
 Remove `utils.loadStylesheet('dark-theme.css');` at `render-process/index.js`.
@@ -26,5 +30,5 @@ darkreader.enable({
 	contrast: 90,
 	sepia: 10,
 });
-setTimeout(() => darkreader.exportGeneratedCSS().then(console.log), 5000);
+darkreader.exportGeneratedCSS().then(console.log);
 ```