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README.md

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-# wordpress-server-timing
+# Wordpress Server Timing
+
 Add Server-Timing header information from within your WordPress sites.
+
+## Requirements
+
+- PHP 7
+
+## Installation
+
+1. Copy the `wordpress-server-timing` folder to `wp-content/plugins`.
+2. Activate the plugin through the WordPress admin panel.
+
+## Usage
+
+By default, the plugin measures only nine things, to keep it as light-weight as possible:
+
+- WP setup (time between request start to WP internal timer start)
+- Plugins loaded (time of loading all plugins including mu-plugins)
+- Global query setup (time between plugins loaded and theme loading)
+- Theme loaded (time of loading the theme and running on-the-fly functions.php logic)
+- Non template logic (time between theme load and wp_loaded hook)
+- Template processing (basically time of rendering the current template)
+- API request processing (if API request is sent, otherwise 0)
+- WPDB (time of all DB query if `SAVEQUERIES` is set to truthy)
+- Total application run time
+
+Once the package is successfully installed, you can see your timing information in the developer tools of your browser. Here's an example from Chrome:
+
+![image](screenshot-devtoolbar.png)
+
+## License
+
+The MIT License (MIT). Please see [License File](LICENSE.md) for more information.