Update files to fix spelling and improve documentation

README.md

@@ -17,7 +17,7 @@ composer require gac/routing
 
 Download the latest release from the [Releases page](https://github.com/gigili/PHP-routing/releases).
 
-Don't forget to add these include statements to your php files:
+Don't forget to add these `include_once` statements to your php files:
 
 ```php
 include_once "./Exceptions/CallbackNotFound.php";
@@ -107,6 +107,7 @@ When using chained methods either use `->save()` or `->add()` as the last method
 **NOTE**
 
 * `->save(true|false)` method can still be chained onto if needed
+  * Passing `false` (the default value is `true`) to the `->save()` method will preserve all the previous prefixes and middlewares in that chain
 * `->add()` **CAN NOT** be chained onto and should be the last call in chain
 
 ```php
@@ -137,7 +138,7 @@ $routes
 
 #### Chained routes with multiple chains in one call
 
-```php 
+```php
 $routes
     ->prefix("/test")
     ->middleware([ 'decode_token' ])