public function seedSampleTree()
{
Model::unguard();
$webdev = CategorySimple::create(['name' => 'Web development']);
$webdev->children()->create(['name' => 'HTML5']);
$webdev->children()->create(['name' => 'CSS3']);
$webdev->children()->create(['name' => 'jQuery']);
$webdev->children()->create(['name' => 'Bootstrap']);
$webdev->children()->create(['name' => 'Laravel']);
$october = $webdev->children()->create(['name' => 'OctoberCMS']);
$october->children()->create(['name' => 'September']);
$october->children()->create(['name' => 'October']);
$october->children()->create(['name' => 'November']);
$mobdev = CategorySimple::create(['name' => 'Mobile development']);
$mobdev->children()->create(['name' => 'iOS']);
$mobdev->children()->create(['name' => 'iPhone']);
$mobdev->children()->create(['name' => 'iPad']);
$mobdev->children()->create(['name' => 'Android']);
$design = CategorySimple::create(['name' => 'Graphic design']);
$design->children()->create(['name' => 'Photoshop']);
$design->children()->create(['name' => 'Illustrator']);
$design->children()->create(['name' => 'Fireworks']);
Model::reguard();
}