I'm actually in the process of writing a book about the key differences between the two frameworks, enabling people to shorten the time it takes to get the hang of Laravel. It'll document the differences and similarities between the two frameworks so that you can use your CodeIgniter knowledge to learn Laravel.
I.e. the difference between routing methods in CodeIgniter vs. Laravel, and how migrations work in one vs the other.
Almost everything to do with migrations still has to be done manually, for the most part. I.e. having to create your own controller (https://stackoverflow.com/questions/9154065/how-do-i-run-cod...) in order to run a migration in CodeIgniter vs the more slick 'php artisan migrate' command in Laravel.
If you want to know more about it, you can add your email here: Book info (it's a google form) https://goo.gl/forms/gCAT33rl1h6JbQsw2