Colin Viebrock, author of the well know laravel-sluggable package, created a new Sequel Pro bundle that can genenerate Laravel migration files.

Connect to a database, and select a table in the left-hand column. From the application menu, choose Bundles › Export › Export to Laravel Migration. The resulting Laravel migration file will be saved to your desktop. You can then move this file into your Laravel project (usually /database/migrations) and then run artisan migrate.

https://github.com/cviebrock/sequel-pro-laravel-export