update: added installation guide

Author: codelikesuraj

README.md

@@ -1,15 +1,21 @@
 # go-img2ascii - An image-to-ascii converter
 This is a cli tool that converts any jpeg, jpg or png image to an ascii representation.
 
-## Usage
-```go run main.go [path-to-image] [character-width]```
-
 ## Sample
 |Original|Ascii'd|
 |-|-|
 | ![image](https://github.com/codelikesuraj/go-img2ascii/assets/70463535/32a519a6-fd2d-4c0c-ba29-6f16430a7713) | ![image](https://github.com/codelikesuraj/go-img2ascii/assets/70463535/e9da71eb-97c6-4942-9419-4f33a67887db) |
 | ![image](https://github.com/codelikesuraj/go-img2ascii/assets/70463535/1e4f629b-f69b-48b4-a1a4-7dd1a857f377) | ![image](https://github.com/codelikesuraj/go-img2ascii/assets/70463535/55f79285-91b8-47ed-af4f-79247abf98ec) |
 
+## Usage
+```go run main.go [path-to-image] [character-width]```
+
+## Installation
+- [Click here to download the latest release for your platform](https://github.com/codelikesuraj/go-img2ascii/releases).
+- Extract the archive to a preferred folder/directory
+- Ensure this folder/directory is in your OS' PATH, otherwise add it to PATH
+- Now you can run ```go-img2ascii [path-to-image] [character-width]``` from anywhere
+
 ## Todo
 - ✅ load and decode image file
 - ✅ resize the image