Format code in Parameters class.
Update Parameters class to allow custom routes with 'id' and 'parent_id' routes's parameters.

So you can add routes like this one:
   Route::get('users/{id}', ['as'=>'users.show', 'uses'
=>'UsersController@show']);

Or a nested routes, like this:
    Route::get('users/{user_id}/posts/{id}', ['as'=>'users.posts.show',
'uses' =>'PostsController@show']);

Then the Parameters class should be able to extract the 'user_id' and
'id' parameters to load the User and Post instances.

Should fix issue #6