Update package to Laravel 5

[oriceon]

Hello, make a new repository oauth-5-laravel and use this first commit as a master branch.

I tested facebook, google for now

[adamtester]

Tested and works great for me!

[fnfilho]

@artdarek any plans on fully supporting this?

[adamtester]

It needs to go in a separate repo or at least a separate branch as the instructions say to use dev-master, so everyone Laravel 4 projects would get updated and then break.

I would leave it as a fork and add it to packagist.

[datadimension]

This is given in an arg in the example but there is no scope as to where Request is defined, consequently this breaks everything and makes your hard work useless, please could you clarify in an otherwise great project