Updated docs to use factory provided by php-debug-bar

As of 1.1.0, released yesterday, php-middleware/php-debug-bar now provides a
factory for the middleware it provides. Additionally, this factory will check
if the URI path matches an asset provided by the debug bar, and, if so, stream
it back, eliminating the instructions required for serving the assets.

Author: weierophinney

doc/book/cookbook/debug-toolbars.md

@@ -59,53 +59,25 @@ First, install the middleware in your application:
 $ composer require php-middleware/php-debug-bar
 ```
 
-DebugBar ships with a number of fonts, CSS files, and JavaScript assets that it
-uses. These will need to be copied into your web root:
-
-```bash
-$ cp -a vendor/maximebf/debugbar/src/DebugBar/Resources public/phpdebugbar
-```
-
-(The above creates a new directory, `public/phpdebugbar/`, containing all of the
-assets from the DebugBar package.)
-
-Next, you'll need to create a factory. As an example, you could write the
-following class (in `src/App/PhpDebugBarMiddlewareFactory.php`):
+This package provides a factory for creating the middleware, so we only need to
+wire it into our middleware pipeline.  Create and edit the file
+`config/autoload/middleware-pipeline.local.php` to read as follows:
 
 ```php
-<?php
-namespace App;
-
-use DebugBar\StandardDebugBar;
 use PhpMiddleware\PhpDebugBar\PhpDebugBarMiddleware;
+use PhpMiddleware\PhpDebugBar\PhpDebugBarMiddlewareFactory;
 
-class PhpDebugBarMiddlewareFactory
-{
-    public function __invoke($container)
-    {
-        $debugbar = new StandardDebugBar();
-        $renderer = $debugbar->getJavascriptRenderer('/phpdebugbar');
-        return new PhpDebugBarMiddleware($renderer);
-    }
-}
-```
-
-Finally, you will need to notify the application of this factory, and add the
-middleware to your middleware pipeline. Create and edit the file
-`config/autoload/middleware-pipeline.local.php` to read as follows:
-
-```php
 return [
     'dependencies' => [
         'factories' => [
-            PhpMiddleware\PhpDebugBar\PhpDebugBarMiddleware::class => App\PhpDebugBarMiddlewareFactory::class,
+            PhpDebugBarMiddleware::class => PhpDebugBarMiddlewareFactory::class,
         ],
     ],
     'middleware_pipeline' => [
         'pre_routing' => [
             [
                 'middleware' => [
-                    PhpMiddleware\PhpDebugBar\PhpDebugBarMiddleware::class,
+                    PhpDebugBarMiddleware::class,
                 ],
             ],
         ],