added Composer PATH instructions

README.md

@@ -27,7 +27,25 @@ kobwise is written in PHP and is installed using [Composer](https://getcomposer.
 composer global require osteel/kobwise
 ```
 
-Make sure the `~/.composer/vendor/bin` directory [is in your system's `PATH`](https://blackdeerdev.com/how-to-add-composer-vendor-bin-directory-in-your-path/).
+Make sure the `~/.composer/vendor/bin` directory is in your system's `PATH`.
+
+<details>
+<summary>Show me how</summary>
+
+If it's not already there, add the following line to your Bash configuration file (usually `~/.bash_profile`, `~/.bashrc`, `~/.zshrc`, etc.):
+
+```
+export PATH=~/.composer/vendor/bin:$PATH
+```
+
+If the file doesn't exist, create it.
+
+Run the following command on the file you've just updated for the change to take effect:
+
+```
+source ~/.bash_profile
+```
+</details>
 
 ## Use