Add the Sponsors section

Author: dmitry-ivanov

README.md

@@ -42,6 +42,7 @@ Mutex for Laravel Console Commands.
 - [Troubleshooting](#troubleshooting)
   - [Trait included, but nothing happens?](#trait-included-but-nothing-happens)
   - [Several traits conflict?](#several-traits-conflict)
+- [Sponsors](#sponsors)
 - [License](#license)
 
 ## Usage
@@ -275,6 +276,10 @@ class ExampleCommand extends Command
 }
 ```
 
+## Sponsors
+
+[![Laravel Idea](art/sponsor-laravel-idea.png)](https://laravel-idea.com)
+
 ## License
 
 Laravel Console Mutex is open-sourced software licensed under the [MIT license](LICENSE.md).