phpvms/database/migrations/2015_08_25_172600_create_settings_table.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Foundation\Application;
use Illuminate\Support\Facades\Config;

class CreateSettingsTable extends Migration
{
    public function __construct()
    {
        $this->tablename = Config::get('settings.table');
        $this->keyColumn = Config::get('settings.keyColumn');
        $this->valueColumn = Config::get('settings.valueColumn');
    }

    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create($this->tablename, function (Blueprint $table) {
            $table->increments('id');
            $table->string($this->keyColumn)->index();
            $table->text($this->valueColumn);
            $table->timestamps();
        });

        #Setting::set('currency', 'dollar');
        #Setting::set('currency_descrip', 'Currency to use');

        #Setting::save();
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::drop($this->tablename);
    }
}