base-laravel/database/migrations/2014_10_12_000000_create_users_table.php

<?php

use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateUsersTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('users', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name');
            $table->string('email');
            $table->string('password');
            $table->rememberToken();
            $table->timestamps();

            if(env('DB_CONNECTION') == 'mysql'){
                $table->unique([DB::raw('email(191)')]);
            }else{
                $table->unique('email');
            }
        });

        //Insert default admin
        DB::table('users')->insert([
            'name' => 'Admin',
            'email' => 'admin@example.com',
            'password' => bcrypt('temp'),
            'created_at' => NOW()
        ]);
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('users');
    }
}