add sessions table migration for DB session driver

app/Database/migrations/2017_06_08_0006_create_sessions_table.php

@@ -0,0 +1,35 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateSessionsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('sessions', function (Blueprint $table) {
+            $table->string('id')->unique();
+            $table->unsignedInteger('user_id')->nullable();
+            $table->string('ip_address', 45)->nullable();
+            $table->text('user_agent')->nullable();
+            $table->text('payload');
+            $table->integer('last_activity');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('sessions');
+    }
+}