Insertar lote en Laravel 5

array
(
    array
    (
        [permission_id] => 1,
        [role_id] => 1,
    ),

    array
    (
        [permission_id] => 2,
        [role_id] => 1,
    ),
    array
    (
        [permission_id] => 3,
        [role_id] => 1,
    ),
    array
    (
        [permission_id] => 4,
        [role_id] => 1,
    )
)