Update usage markdown file

Author: jedrzejchalubek

USAGE.md

@@ -6,16 +6,24 @@ You should be familiar with the command line to efficiently install this theme.
 
 This theme follow WordPress [recommended requirments](https://wordpress.org/about/requirements). Your server must fulfill requirements:
 
-- At least PHP >= 5.6 (PHP >= 7.0 is recommended)
-- WordPress 4.4
+- At least PHP >= 7.0
+- MySQL >=5.6 or MariaDB >=10.0
+- The mod_rewrite Apache module
+
+Make sure you have all these dependences installed before moving on:
+
+- WordPress >= 4.7
+- Composer
+- Node.js
 
 ## Dependences
 
-Theme is based on [Tonik WordPress Starter Theme](https://github.com/tonik/tonik) and requires this dependencies to operate:
+Theme is based on [Tonik WordPress Starter Theme](https://github.com/tonik/theme). It has a few PHP dependencies, they are extracted to separate packages for easy installation and managing via Composer.
 
-- [tonik/gin](https://github.com/tonik/gin) package >= 2.0.0
+- [tonik/gin](https://github.com/tonik/gin) (required) - Theme foundation which provides all custom functionalities
+- [tonik/cli](https://github.com/tonik/cli) (optional) - Simple CLI for initiating theme
 
-## Bootstrapping Theme
+## Installation
 
 Download or clone theme repository to the `wp-content/themes` directory.
 
@@ -49,11 +57,11 @@ $ npm run prod
 
 Here is a list of theme's required and recommended plugins. They can be installed via "Plugins" dashboard or manually uploaded to the `wp-content/plugins` directory.
 
-- plugin-name ([plugin-url](#plugin-url))
+- <plugin-name> ([plugin-url](#plugin-url))
 - ...
 
 Familiar with WP-CLI? Install plugins via command line:
 
 ```
-wp plugin install plugin-name --activate
-```
+wp plugin install <plugin-name> --activate
+```