add migration for notification. update booking confirmation

database/migrations/2018_07_21_102920_create_notification_table.php

@@ -0,0 +1,37 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateNotificationTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('notifications', function (Blueprint $table) {
+            $table->increments('id');
+            $table->string('detail');
+            $table->unsignedInteger('user_id');
+            $table->timestamps();
+
+            $table->foreign('user_id')
+                    ->references('id')->on('users')
+                    ->onDelete('cascade');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('notifications');
+    }
+}