Update buttons-installation.md

Author: yajra

buttons-installation.md

@@ -1,12 +1,19 @@
-# Buttons Plugin Installation
+# Buttons Plugin
 
-Github: https://github.com/yajra/laravel-datatables-buttons
+A Laravel DataTables plugin for handling server-side exporting of table as csv, excel, pdf, etc.
+
+<a name="installation"></a>
+## Installation
 
 Run the following command in your project to get the latest version of the plugin:
 
-`composer require yajra/laravel-datatables-buttons:^9.0`
+```shell
+composer require yajra/laravel-datatables-buttons:^9.0
+```
 
+<a name="configuratio"></a>
 ## Configuration
+
 > This step is optional if you are using Laravel 5.5
 
 Open the file ```config/app.php``` and then add following service provider.
@@ -21,6 +28,6 @@ Open the file ```config/app.php``` and then add following service provider.
 
 After completing the step above, use the following command to publish configuration & assets:
 
-```
+```shell
 php artisan vendor:publish --tag=datatables-buttons
 ```