Update composer.json

[shokmaster]

Update this dependency to make L4Shell compatible with Laravel 4.2.

The problem lies in your package dependency on "illuminate/support": "4.0.x"

[netson]

Hey, the suggested update will eliminate support for existing laravel 4.0 and 4.1 versions. If you can update the pull request to include those (like "illuminate/support": ">=4.0,<4.3" then I'll merge it.

That being said, you should take a look at using the Symfony2/Process component instead since it is more advanced, has more features and this module will not be supported in the future.