Add Silverstripe instructions to readme (#7)

README.md

@@ -8,6 +8,7 @@
 - [Framework configuration](#framework-configuration)
   - [Drupal 8+](#drupal-8)
   - [Wordpress](#wordpress)
+  - [Silverstripe](#silverstripe)
 - [Usage](#usage)
 
 ## Introduction
@@ -79,6 +80,30 @@ If you want to stop profiling, you can just comment/remove those lines.
 
 Take into account that with the default configuration, every time you `ddev start`, DDEV will recreate this file. You can remove the `#ddev-generated` at the top of the file if you want to avoid that.
 
+### Silverstripe
+
+Add/install `perftools/php-profiler`, as per [getting started](#getting-started)
+
+- Copy the files from `.ddev/xhgui/examples` folder to your `public` folder (`cp .ddev/xhgui/examples/*.php public/`)
+- Add the requirement to your `public/index.php`, right after the autoload includes:
+  ```php
+  if (file_exists(__DIR__ . '/../vendor/autoload.php')) {
+    require __DIR__ . '/../vendor/autoload.php';
+  } elseif (file_exists(__DIR__ . '/vendor/autoload.php')) {
+      require __DIR__ . '/vendor/autoload.php';
+  } else {
+      header('HTTP/1.1 500 Internal Server Error');
+      echo "autoload.php not found";
+      exit(1);
+  }
+  if (file_exists(__DIR__ . '/xhgui.collector.php')) {
+    require_once __DIR__ . '/xhgui.collector.php';
+  }
+  ```
+- Run `ddev xhprof` to start profiling
+- XHGui is now available at <https://>`yourproject.ddev.site`:8142
+
+
 ## Usage
 
 The service will automatically start when run: `ddev start` or `ddev restart`.