Update README.md

Author: Garulf

README.md

@@ -1,4 +1,36 @@
-Steam-Search *Rofi edition*
+# Steam-Search *Rofi edition*
 
-![Screenshot 1](/screenshots/screenshot3.png)
-![Screenshot 2](/screenshots/screenshot2.png)
+![Steam Search using icon type](/screenshots/screenshot3.png)
+
+## Installation
+
+### Manual Install
+
+1. Download the executable from here: [Releases](https://github.com/Garulf/Steam-Search-rofi/releases)
+2. Move `steam-search.pyz` to your Rofi scripts directory (~/.config/rofi/scripts)
+3. Run `chmod +x ./steam-search.pyz` to allow Steam Search to run.
+
+## Usage
+
+Steam Search can be launched easily with:
+```
+rofi -modes steam-search -show steam-search
+```
+
+## Options
+
+Steam Search allows you to customize some of its features using environmental variables.
+
+| ENV        | DEFAULT              | INPUT                   | Description                                                     |
+|------------|----------------------|-------------------------|-----------------------------------------------------------------|
+| STEAM_PATH | ~/.local/share/steam | Steam install directory | This is the path Steam Search uses to find your Steam library.  |
+| ICON_TYPE  | icon                 | icon, grid              | Set what type of image Steam Search will use for icons in Rofi. |
+
+example:
+```
+ICON_TYPE=grid rofi -modes steam-search -show steam-search
+```
+
+## More screenshots
+
+![Steam Search using grid icon type](/screenshots/screenshot2.png)