docs: update README.md

README.md

@@ -2,10 +2,7 @@
 goenv is a command-line tool to manage multiple versions of Golang on your system.
 
 ## Installation
-To install goenv, you can use the following command:
-```shell
-go install github.com/ankitcharolia/goenv@latest
-```
+**Download**: https://github.com/ankitcharolia/goenv/releases
 
 ## Usage
 goenv provides several commands to manage Golang versions on your system.
@@ -21,5 +18,30 @@ Flags:
   --use           Use a specific version of GOLANG
 ```
 
+### Install a specific version of GOLANG
+```shell
+$ goenv --install 1.20.6
+Installing Go version 1.20.6...
+https://dl.google.com/go/go1.20.6.linux-amd64.tar.gz
+95.57 MiB / 95.57 MiB [-----------------------------------------------------------------------------------------------] 100.00% 13.92 MiB p/s 7.1s
+Go version 1.20.6 is installed at $HOME_DIRECTORY/.go/1.20.6.
+```
+
+### Use a specific version of GOLANG
+```shell
+$ goenv --use 1.20.6
+Using Go version 1.20.6.
+Please make sure to execute: source ~/.bashrc
+```
+
+### List all installed GOLANG versions
+```shell
+$ goenv --list
+Installed Golang versions:
+* 1.20.6  (Currently active GOLANG version)
+  1.20.5
+  1.20.4
+```
+
 ## License
 This project is licensed under the MIT License - see the LICENSE file for details.