Added 'Usage Example' section

Author: dmhendricks

README.md

@@ -1,17 +1,17 @@
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 # PHP Combine Scripts
 
-A simple PHP script to combine and minify multiple JS or CSS files passed via URI, inspired by [jsDelivr](https://www.jsdelivr.com/features/?utm_source=github.com&utm_medium=campaign&utm_content=button&utm_campaign=php-combine-scripts#combine).
+A simple PHP script to combine and minify multiple JS or CSS files passed via URI, inspired by [jsDelivr](https://www.jsdelivr.com/features/?utm_source=github.com&utm_medium=referral&utm_content=link&utm_campaign=php-combine-scripts#combine).
 
 ## Setup
 
 1. Clone or unzip the files to a directory off of your web root. For example, `/combine/`. Change to that directory.
 1. `composer install`
-1. Rename `.env-sample` to `.env`. Change the `COMBINE_BASEDIR` to match your web root.
+1. Rename `.env-sample` to `.env`. Set the `COMBINE_BASEDIR` to the directory that will contain your JS/CSS files that you want to allow combining/minification for.
 1. Configure your web server to rewrite URLs, as shown in the examples below. Change the `/combine/` and `/minify/` paths as desired.
 
 ### Nginx
@@ -29,3 +29,19 @@ rewrite ^/minify/(.*)$ /combine/index.php?minify=true&scripts=$1;
 RewriteRule "^/combine/(.*)$" "/combine/index.php?scripts=$1"
 RewriteRule "^/minify/(.*)$" "/combine/index.php?minify=true&scripts=$1"
 ```
+
+## Usage Example
+
+For example, let's say that you set your `COMBINE_BASEDIR` to `/var/www/html/scipts/`. Withing this directory, you might have some JS or CSS libraries. We'll combine [Font Awesome](https://fontawesome.com/?utm_source=github.com&utm_medium=referral&utm_content=link&utm_campaign=php-combine-scripts) with the [v4 shims](https://fontawesome.com/how-to-use/on-the-web/setup/upgrading-from-version-4/?utm_source=github.com&utm_medium=referral&utm_content=link&utm_campaign=php-combine-scripts#shims) as an example, assuming that you have already [extracted them](https://github.com/FortAwesome/Font-Awesome/tree/master/css) to `/var/www/html/scipts/dist/css/`.
+
+To combine or minify Font Awesome 5 and the
+
+```html
+<!-- Combine example -->
+<link rel="stylesheet" href="https://example.com/combine/dist/css/all.min.css,dist/css/v4-shims.min.css" />
+
+<!-- Minify example -->
+<link rel="stylesheet" href="https://example.com/minify/dist/css/all.css,dist/css/v4-shims.css" />
+```
+
+Of course, minification is not necessary for scripts that you already have minified versions for. It is merely an option for libraries/scripts that do not contain a minified version. If you have minified versions avaible, it is recommended to simply use the "combine" method as it consumes less system resources.