php-flarum/migrations/2015_02_24_000000_create_groups_table.php

<?php

use Flarum\Install\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateGroupsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        $this->schema->create('groups', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name_singular', 100);
            $table->string('name_plural', 100);
            $table->string('color', 20)->nullable();
            $table->string('icon', 100)->nullable();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        $this->schema->drop('groups');
    }
}